docs: update .all-contributorsrc [skip ci]

* Update README.md

Corrected some sentences grammatically.

* Update README.md

Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com>

* Update README.md

Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com>

.all-contributorsrc

@@ -16,6 +16,17 @@
         "content"
       ]
     },
+    {
+      "login": "ohbus",
+      "name": "Subhrodip Mohanta",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/13291222?v=4",
+      "profile": "http://subho.xyz",
+      "contributions": [
+        "code",
+        "review",
+        "maintenance"
+      ]
+    },
     {
       "login": "amit1307",
       "name": "amit1307",
@@ -1125,17 +1136,6 @@
         "ideas"
       ]
     },
-    {
-      "login": "ohbus",
-      "name": "Subhrodip Mohanta",
-      "avatar_url": "https://avatars0.githubusercontent.com/u/13291222?v=4",
-      "profile": "http://subho.xyz",
-      "contributions": [
-        "code",
-        "review",
-        "maintenance"
-      ]
-    },
     {
       "login": "nahteb",
       "name": "Bethan Palmer",
@@ -1631,9 +1631,108 @@
       "contributions": [
         "translation"
       ]
+    },
+    {
+      "login": "sims-keshri",
+      "name": "Simran Keshri",
+      "avatar_url": "https://avatars.githubusercontent.com/u/62168475?v=4",
+      "profile": "https://github.com/sims-keshri",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "JCarlosR",
+      "name": "JCarlos",
+      "avatar_url": "https://avatars.githubusercontent.com/u/3101238?v=4",
+      "profile": "https://programacionymas.com",
+      "contributions": [
+        "translation"
+      ]
+    },
+    {
+      "login": "Dev-AliGhasemi",
+      "name": "Ali Ghasemi",
+      "avatar_url": "https://avatars.githubusercontent.com/u/60359433?v=4",
+      "profile": "https://www.mrmoshkel.ir",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "carldea",
+      "name": "Carl Dea",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1594624?v=4",
+      "profile": "http://carlfx.wordpress.com",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "Mozartuss",
+      "name": "Mozartus",
+      "avatar_url": "https://avatars.githubusercontent.com/u/32893711?v=4",
+      "profile": "https://github.com/Mozartuss",
+      "contributions": [
+        "translation"
+      ]
+    },
+    {
+      "login": "ManviGoel26",
+      "name": "Manvi Goel",
+      "avatar_url": "https://avatars.githubusercontent.com/u/55682355?v=4",
+      "profile": "https://github.com/ManviGoel26",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "blueberry404",
+      "name": "Anum Amin",
+      "avatar_url": "https://avatars.githubusercontent.com/u/39243539?v=4",
+      "profile": "https://github.com/blueberry404",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "uh-zz",
+      "name": "Reo Uehara",
+      "avatar_url": "https://avatars.githubusercontent.com/u/47747828?v=4",
+      "profile": "https://uh-zz.github.io/blog/",
+      "contributions": [
+        "translation"
+      ]
+    },
+    {
+      "login": "Fiordy",
+      "name": "Fiordy",
+      "avatar_url": "https://avatars.githubusercontent.com/u/53420573?v=4",
+      "profile": "https://github.com/Fiordy",
+      "contributions": [
+        "doc"
+      ]
+    },
+    {
+      "login": "harshalkh",
+      "name": "Harshal",
+      "avatar_url": "https://avatars.githubusercontent.com/u/37841724?v=4",
+      "profile": "https://github.com/harshalkh",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "vashisthabhinav",
+      "name": "Abhinav Vashisth",
+      "avatar_url": "https://avatars.githubusercontent.com/u/89785800?v=4",
+      "profile": "https://www.linkedin.com/in/abhinav-vashisth-06613b208/",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
-  "contributorsPerLine": 4,
+  "contributorsPerLine": 7,
   "projectName": "java-design-patterns",
   "projectOwner": "iluwatar",
   "repoType": "github",

.github/workflows/maven-ci.yml

@@ -24,6 +24,9 @@
 # This workflow will build a Java project with Maven
 # For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
 
+# We are using two jobs here for testing our code on the latest JDK 11 build as well as a more satble build version of 11.0.3
+# You can see the full discussion here https://github.com/iluwatar/java-design-patterns/pull/1868#issue-1029459688
+
 name: Java CI
 
 on:
@@ -33,10 +36,11 @@ on:
 
 jobs:
 
-  build:
+  # This Workflow Job will build this project and run Sonar analysis using JDK 11.0.3
+  build-and-analyze:
 
+    name: Build and Run Sonar analysis on JDK 11.0.3
     runs-on: ubuntu-20.04
-
     steps:
 
     - name: Checkout Code
@@ -45,12 +49,14 @@ jobs:
         # Disabling shallow clone for improving relevancy of SonarQube reporting
         fetch-depth: 0
 
-    - name: Set up JDK 11
+    - name: Set up JDK 11.0.3
       uses: actions/setup-java@v2
       with:
-        java-version: 11
+        java-version: 11.0.3
-        distribution: 'adopt'
+        distribution: 'zulu'
+        cache: 'maven'
 
+    # Cache Sonar packages which as used to run anaylysis and collect metrics
     - name: Cache SonarCloud packages
       uses: actions/cache@v2
       with:
@@ -58,14 +64,6 @@ jobs:
         key: ${{ runner.os }}-sonar
         restore-keys: ${{ runner.os }}-sonar
 
-    - name: Cache Maven dependencies
-      uses: actions/cache@v2
-      with:
-        path: ~/.m2/repository
-        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
-        restore-keys: |
-          ${{ runner.os }}-maven-
-
     # Some tests need screen access
     - name: Install xvfb
       run: sudo apt-get install -y xvfb
@@ -76,3 +74,28 @@ jobs:
         # These two env variables are needed for sonar analysis
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+
+  
+  # This Workflow Job is going to build the project on the latest stable JDK 11
+  build:
+
+    name: Build and Test on JDK 11
+    runs-on: ubuntu-20.04
+    steps:
+
+    - name: Checkout Code
+      uses: actions/checkout@v2
+
+    - name: Set up JDK 11 (Latest)
+      uses: actions/setup-java@v2
+      with:
+        java-version: 11
+        distribution: 'zulu'
+        cache: 'maven'
+
+    # Some tests need screen access
+    - name: Install xvfb
+      run: sudo apt-get install -y xvfb
+
+    - name: Build with Maven
+      run: xvfb-run ./mvnw clean verify

.github/workflows/maven-pr-builder.yml

@@ -34,25 +34,22 @@ on:
 jobs:
   build:
 
+    name: Build JDP
     runs-on: ubuntu-20.04
-
+    strategy:
+      matrix:
+        java-version: [ 11.0.3, 11 ]
     steps:
+    
     - name: Checkout Code
       uses: actions/checkout@v2
     
-    - name: Set up JDK 11
+    - name: Set up JDK ${{ matrix.java-version }}
       uses: actions/setup-java@v2
       with:
-        java-version: 11
+        java-version: ${{ matrix.java-version }}
-        distribution: 'adopt'
+        distribution: 'zulu'
-    
+        cache: 'maven'
-    - name: Cache Maven Dependecies
-      uses: actions/cache@v2
-      with:
-        path: ~/.m2/repository
-        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
-        restore-keys: |
-          ${{ runner.os }}-maven-
     
     # Some tests need screen access
     - name: Install xvfb

README.md

@@ -10,18 +10,18 @@
 [![Coverage](https://sonarcloud.io/api/project_badges/measure?project=iluwatar_java-design-patterns&metric=coverage)](https://sonarcloud.io/dashboard?id=iluwatar_java-design-patterns)
 [![Join the chat at https://gitter.im/iluwatar/java-design-patterns](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/iluwatar/java-design-patterns?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-179-orange.svg?style=flat-square)](#contributors-)
+[![All Contributors](https://img.shields.io/badge/all_contributors-190-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 <br/>
 
-Read in different language : [**zh**](localization/zh/README.md), [**ko**](localization/ko/README.md), [**fr**](localization/fr/README.md), [**tr**](localization/tr/README.md), [**ar**](localization/ar/README.md), [**es**](localization/es/README.md), [**pt**](localization/pt/README.md), [**id**](localization/id/README.md), [**ru**](localization/ru/README.md) 
+Read in different language : [**zh**](localization/zh/README.md), [**ko**](localization/ko/README.md), [**fr**](localization/fr/README.md), [**tr**](localization/tr/README.md), [**ar**](localization/ar/README.md), [**es**](localization/es/README.md), [**pt**](localization/pt/README.md), [**id**](localization/id/README.md), [**ru**](localization/ru/README.md), [**de**](localization/de/README.md), [**ja**](localization/ja/README.md)
 
 <br/>
 
 # Introduction
 
-Design patterns are the best formalized practices a programmer can use to
+Design patterns are the best, formalized practices a programmer can use to
 solve common problems when designing an application or system.
 
 Design patterns can speed up the development process by providing tested, proven
@@ -34,11 +34,11 @@ are familiar with the patterns.
 # Getting started
 
 This site showcases Java Design Patterns. The solutions have been developed by
-experienced programmers and architects from the open source community. The
+experienced programmers and architects from the open-source community. The
-patterns can be browsed by their high level descriptions or by looking at their
+patterns can be browsed by their high-level descriptions or by looking at their
-source code. The source code examples are well commented and can be thought as
+source code. The source code examples are well commented and can be thought of as
 programming tutorials on how to implement a specific pattern. We use the most
-popular battle-proven open source Java technologies.
+popular battle-proven open-source Java technologies.
 
 Before you dive into the material, you should be familiar with various
 [Software Design Principles](https://java-design-patterns.com/principles/).
@@ -56,8 +56,8 @@ of the following approaches
  - Using tags such as `Performance`, `Gang of Four` or `Data access`.
  - Using pattern categories, `Creational`, `Behavioral`, and others.
 
-Hopefully you find the object oriented solutions presented on this site useful
+Hopefully, you find the object-oriented solutions presented on this site useful
-in your architectures and have as much fun learning them as we had developing them.
+in your architectures and have as much fun learning them as we had while developing them.
 
 # How to contribute
 
@@ -77,29 +77,26 @@ This project is licensed under the terms of the MIT license.
 <table>
   <tr>
     <td align="center"><a href="https://github.com/iluwatar"><img src="https://avatars1.githubusercontent.com/u/582346?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ilkka Seppälä</b></sub></a><br /><a href="#projectManagement-iluwatar" title="Project Management">📆</a> <a href="#maintenance-iluwatar" title="Maintenance">🚧</a> <a href="#content-iluwatar" title="Content">🖋</a></td>
+    <td align="center"><a href="http://subho.xyz"><img src="https://avatars0.githubusercontent.com/u/13291222?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Subhrodip Mohanta</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=ohbus" title="Code">💻</a> <a href="https://github.com/iluwatar/java-design-patterns/pulls?q=is%3Apr+reviewed-by%3Aohbus" title="Reviewed Pull Requests">👀</a> <a href="#maintenance-ohbus" title="Maintenance">🚧</a></td>
     <td align="center"><a href="https://github.com/amit1307"><img src="https://avatars0.githubusercontent.com/u/23420222?v=4?s=100" width="100px;" alt=""/><br /><sub><b>amit1307</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=amit1307" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/npathai"><img src="https://avatars2.githubusercontent.com/u/1792515?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Narendra Pathai</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=npathai" title="Code">💻</a> <a href="#ideas-npathai" title="Ideas, Planning, & Feedback">🤔</a> <a href="https://github.com/iluwatar/java-design-patterns/pulls?q=is%3Apr+reviewed-by%3Anpathai" title="Reviewed Pull Requests">👀</a></td>
     <td align="center"><a href="https://github.com/fluxw42"><img src="https://avatars1.githubusercontent.com/u/1545460?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jeroen Meulemeester</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=fluxw42" title="Code">💻</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="http://www.joemccarthy.co.uk"><img src="https://avatars0.githubusercontent.com/u/4526195?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Joseph McCarthy</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=mikulucky" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/thomasoss"><img src="https://avatars1.githubusercontent.com/u/22516154?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Thomas</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=thomasoss" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/anuragagarwal561994"><img src="https://avatars1.githubusercontent.com/u/6075379?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Anurag Agarwal</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=anuragagarwal561994" title="Code">💻</a></td>
-    <td align="center"><a href="https://markusmo3.github.io"><img src="https://avatars1.githubusercontent.com/u/3317416?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Markus Moser</b></sub></a><br /><a href="#design-markusmo3" title="Design">🎨</a> <a href="https://github.com/iluwatar/java-design-patterns/commits?author=markusmo3" title="Code">💻</a> <a href="#ideas-markusmo3" title="Ideas, Planning, & Feedback">🤔</a></td>
   </tr>
   <tr>
+    <td align="center"><a href="https://github.com/anuragagarwal561994"><img src="https://avatars1.githubusercontent.com/u/6075379?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Anurag Agarwal</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=anuragagarwal561994" title="Code">💻</a></td>
+    <td align="center"><a href="https://markusmo3.github.io"><img src="https://avatars1.githubusercontent.com/u/3317416?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Markus Moser</b></sub></a><br /><a href="#design-markusmo3" title="Design">🎨</a> <a href="https://github.com/iluwatar/java-design-patterns/commits?author=markusmo3" title="Code">💻</a> <a href="#ideas-markusmo3" title="Ideas, Planning, & Feedback">🤔</a></td>
     <td align="center"><a href="https://twitter.com/i_sabiq"><img src="https://avatars1.githubusercontent.com/u/19510920?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Sabiq Ihab</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=isabiq" title="Code">💻</a></td>
     <td align="center"><a href="http://inbravo.github.io"><img src="https://avatars3.githubusercontent.com/u/5253764?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Amit Dixit</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=inbravo" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/piyushchaudhari04"><img src="https://avatars3.githubusercontent.com/u/10268029?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Piyush Kailash Chaudhari</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=piyushchaudhari04" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/joshzambales"><img src="https://avatars1.githubusercontent.com/u/8704552?v=4?s=100" width="100px;" alt=""/><br /><sub><b>joshzambales</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=joshzambales" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/Crossy147"><img src="https://avatars2.githubusercontent.com/u/7272996?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Kamil Pietruszka</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Crossy147" title="Code">💻</a></td>
   </tr>
   <tr>
-    <td align="center"><a href="https://github.com/Crossy147"><img src="https://avatars2.githubusercontent.com/u/7272996?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Kamil Pietruszka</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Crossy147" title="Code">💻</a></td>
     <td align="center"><a href="http://cs.joensuu.fi/~zkhayda"><img src="https://avatars2.githubusercontent.com/u/660742?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Zafar Khaydarov</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=zafarella" title="Code">💻</a> <a href="https://github.com/iluwatar/java-design-patterns/commits?author=zafarella" title="Documentation">📖</a></td>
     <td align="center"><a href="https://kemitix.github.io/"><img src="https://avatars1.githubusercontent.com/u/1147749?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Paul Campbell</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=kemitix" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/Argyro-Sioziou"><img src="https://avatars0.githubusercontent.com/u/22822639?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Argyro Sioziou</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Argyro-Sioziou" title="Code">💻</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://github.com/TylerMcConville"><img src="https://avatars0.githubusercontent.com/u/4946449?v=4?s=100" width="100px;" alt=""/><br /><sub><b>TylerMcConville</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=TylerMcConville" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/saksham93"><img src="https://avatars1.githubusercontent.com/u/37399540?v=4?s=100" width="100px;" alt=""/><br /><sub><b>saksham93</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=saksham93" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/nikhilbarar"><img src="https://avatars2.githubusercontent.com/u/37332144?v=4?s=100" width="100px;" alt=""/><br /><sub><b>nikhilbarar</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=nikhilbarar" title="Code">💻</a></td>
@@ -110,38 +107,32 @@ This project is licensed under the terms of the MIT license.
     <td align="center"><a href="https://github.com/JuhoKang"><img src="https://avatars1.githubusercontent.com/u/4745294?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Juho Kang</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=JuhoKang" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/dheeraj-mummareddy"><img src="https://avatars2.githubusercontent.com/u/7002230?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Dheeraj Mummareddy</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=dheeraj-mummareddy" title="Code">💻</a></td>
     <td align="center"><a href="https://www.bernardosulzbach.com"><img src="https://avatars0.githubusercontent.com/u/8271090?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Bernardo Sulzbach</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=bernardosulzbach" title="Code">💻</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://github.com/4lexis"><img src="https://avatars0.githubusercontent.com/u/19871727?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Aleksandar Dudukovic</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=4lexis" title="Code">💻</a></td>
     <td align="center"><a href="https://www.yusufaytas.com"><img src="https://avatars2.githubusercontent.com/u/1049483?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Yusuf Aytaş</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=yusufaytas" title="Code">💻</a></td>
     <td align="center"><a href="http://futurehomes.hu"><img src="https://avatars2.githubusercontent.com/u/1001491?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Mihály Kuprivecz</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=qpi" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/kapinuss"><img src="https://avatars0.githubusercontent.com/u/17639945?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Stanislav Kapinus</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=kapinuss" title="Code">💻</a></td>
   </tr>
   <tr>
+    <td align="center"><a href="https://github.com/kapinuss"><img src="https://avatars0.githubusercontent.com/u/17639945?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Stanislav Kapinus</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=kapinuss" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/gvsharma"><img src="https://avatars1.githubusercontent.com/u/6648152?v=4?s=100" width="100px;" alt=""/><br /><sub><b>GVSharma</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=gvsharma" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/SrdjanPaunovic"><img src="https://avatars1.githubusercontent.com/u/22815104?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Srđan Paunović</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=SrdjanPaunovic" title="Code">💻</a></td>
     <td align="center"><a href="https://sideris.xyz/"><img src="https://avatars3.githubusercontent.com/u/5484694?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Petros G. Sideris</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=sideris" title="Code">💻</a></td>
     <td align="center"><a href="https://www.linkedin.com/in/pramodgupta3/"><img src="https://avatars1.githubusercontent.com/u/2184241?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Pramod Gupta</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/pulls?q=is%3Apr+reviewed-by%3AIAmPramod" title="Reviewed Pull Requests">👀</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://amarnath510.github.io/portfolio"><img src="https://avatars0.githubusercontent.com/u/4599623?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Amarnath Chandana</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Amarnath510" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/Anurag870"><img src="https://avatars1.githubusercontent.com/u/6295975?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Anurag870</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Anurag870" title="Code">💻</a> <a href="https://github.com/iluwatar/java-design-patterns/commits?author=Anurag870" title="Documentation">📖</a></td>
-    <td align="center"><a href="http://theerroris.me"><img src="https://avatars0.githubusercontent.com/u/1685953?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Wes Gilleland</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Deathnerd" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/Harshrajsinh"><img src="https://avatars2.githubusercontent.com/u/22811531?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Harshraj Thakor</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Harshrajsinh" title="Code">💻</a></td>
   </tr>
   <tr>
+    <td align="center"><a href="http://theerroris.me"><img src="https://avatars0.githubusercontent.com/u/1685953?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Wes Gilleland</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Deathnerd" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/Harshrajsinh"><img src="https://avatars2.githubusercontent.com/u/22811531?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Harshraj Thakor</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Harshrajsinh" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/MaVdbussche"><img src="https://avatars1.githubusercontent.com/u/26136934?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Martin Vandenbussche</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=MaVdbussche" title="Code">💻</a></td>
     <td align="center"><a href="https://alexsomai.com"><img src="https://avatars1.githubusercontent.com/u/5720977?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Alexandru Somai</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=alexsomai" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/amogozov"><img src="https://avatars3.githubusercontent.com/u/7372215?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Artur Mogozov</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=amogozov" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/anthonycampbell"><img src="https://avatars3.githubusercontent.com/u/10249255?v=4?s=100" width="100px;" alt=""/><br /><sub><b>anthony</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=anthonycampbell" title="Code">💻</a></td>
+    <td align="center"><a href="http://ccygnus.com/"><img src="https://avatars1.githubusercontent.com/u/9342724?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Christian Cygnus</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=christophercolumbusdog" title="Code">💻</a></td>
   </tr>
   <tr>
-    <td align="center"><a href="http://ccygnus.com/"><img src="https://avatars1.githubusercontent.com/u/9342724?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Christian Cygnus</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=christophercolumbusdog" title="Code">💻</a></td>
     <td align="center"><a href="https://about.me/dzmitryh"><img src="https://avatars2.githubusercontent.com/u/5390492?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Dima Gubin</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=dzmitryh" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/jjjimenez100"><img src="https://avatars3.githubusercontent.com/u/22243493?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Joshua Jimenez</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=jjjimenez100" title="Code">💻</a></td>
     <td align="center"><a href="http://about.me/kaiwinter"><img src="https://avatars0.githubusercontent.com/u/110982?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Kai Winter</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=kaiwinter" title="Code">💻</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://github.com/lbroman"><img src="https://avatars1.githubusercontent.com/u/86007?v=4?s=100" width="100px;" alt=""/><br /><sub><b>lbroman</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=lbroman" title="Code">💻</a></td>
     <td align="center"><a href="https://przemeknowak.com"><img src="https://avatars1.githubusercontent.com/u/3254609?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Przemek</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=pnowy" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/prafful1"><img src="https://avatars0.githubusercontent.com/u/14350274?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Prafful Agarwal</b></sub></a><br /><a href="#content-prafful1" title="Content">🖋</a></td>
@@ -152,38 +143,32 @@ This project is licensed under the terms of the MIT license.
     <td align="center"><a href="https://github.com/valdar-hu"><img src="https://avatars3.githubusercontent.com/u/17962817?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Krisztián Nagy</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=valdar-hu" title="Code">💻</a></td>
     <td align="center"><a href="https://www.vanogrid.com"><img src="https://avatars0.githubusercontent.com/u/4307918?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Alexander Ivanov</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=vanogrid" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/yosfik"><img src="https://avatars3.githubusercontent.com/u/4850270?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Yosfik Alqadri</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=yosfik" title="Code">💻</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://github.com/7agustibm"><img src="https://avatars0.githubusercontent.com/u/8149332?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Agustí Becerra Milà</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=7agustibm" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/Juaanma"><img src="https://avatars3.githubusercontent.com/u/7390500?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Juan Manuel Suárez</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Juaanma" title="Code">💻</a></td>
     <td align="center"><a href="http://www.devsedge.net/"><img src="https://avatars0.githubusercontent.com/u/9956006?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Luigi Cortese</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=LuigiCortese" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/Rzeposlaw"><img src="https://avatars2.githubusercontent.com/u/18425745?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Katarzyna Rzepecka</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Rzeposlaw" title="Code">💻</a></td>
   </tr>
   <tr>
+    <td align="center"><a href="https://github.com/Rzeposlaw"><img src="https://avatars2.githubusercontent.com/u/18425745?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Katarzyna Rzepecka</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Rzeposlaw" title="Code">💻</a></td>
     <td align="center"><a href="http://adamski.pro"><img src="https://avatars1.githubusercontent.com/u/6537430?v=4?s=100" width="100px;" alt=""/><br /><sub><b>adamski.pro</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=akrystian" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/baislsl"><img src="https://avatars0.githubusercontent.com/u/17060584?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Shengli Bai</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=baislsl" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/besok"><img src="https://avatars2.githubusercontent.com/u/29834592?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Boris</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=besok" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/dmitraver"><img src="https://avatars3.githubusercontent.com/u/1798156?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Dmitry Avershin</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=dmitraver" title="Code">💻</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://github.com/fanofxiaofeng"><img src="https://avatars0.githubusercontent.com/u/3983683?v=4?s=100" width="100px;" alt=""/><br /><sub><b>靳阳</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=fanofxiaofeng" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/hoangnam2261"><img src="https://avatars2.githubusercontent.com/u/31692990?v=4?s=100" width="100px;" alt=""/><br /><sub><b>hoangnam2261</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=hoangnam2261" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/jarpit96"><img src="https://avatars2.githubusercontent.com/u/10098713?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Arpit Jain</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=jarpit96" title="Code">💻</a></td>
-    <td align="center"><a href="http://joningi.net"><img src="https://avatars2.githubusercontent.com/u/6115148?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jón Ingi Sveinbjörnsson</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=joningiwork" title="Code">💻</a></td>
   </tr>
   <tr>
+    <td align="center"><a href="https://github.com/jarpit96"><img src="https://avatars2.githubusercontent.com/u/10098713?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Arpit Jain</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=jarpit96" title="Code">💻</a></td>
+    <td align="center"><a href="http://joningi.net"><img src="https://avatars2.githubusercontent.com/u/6115148?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jón Ingi Sveinbjörnsson</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=joningiwork" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/kirill-vlasov"><img src="https://avatars3.githubusercontent.com/u/16112495?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Kirill Vlasov</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=kirill-vlasov" title="Code">💻</a></td>
     <td align="center"><a href="http://mitchell-irvin.com"><img src="https://avatars0.githubusercontent.com/u/16233245?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Mitchell Irvin</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=mitchellirvin" title="Code">💻</a></td>
     <td align="center"><a href="https://ranjeet-floyd.github.io"><img src="https://avatars0.githubusercontent.com/u/1992972?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ranjeet</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=ranjeet-floyd" title="Code">💻</a></td>
     <td align="center"><a href="https://alwayswithme.github.io"><img src="https://avatars3.githubusercontent.com/u/3234786?v=4?s=100" width="100px;" alt=""/><br /><sub><b>PhoenixYip</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Alwayswithme" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/MSaifAsif"><img src="https://avatars1.githubusercontent.com/u/6280554?v=4?s=100" width="100px;" alt=""/><br /><sub><b>M Saif Asif</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=MSaifAsif" title="Code">💻</a></td>
   </tr>
   <tr>
-    <td align="center"><a href="https://github.com/MSaifAsif"><img src="https://avatars1.githubusercontent.com/u/6280554?v=4?s=100" width="100px;" alt=""/><br /><sub><b>M Saif Asif</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=MSaifAsif" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/kanwarpreet25"><img src="https://avatars0.githubusercontent.com/u/39183641?v=4?s=100" width="100px;" alt=""/><br /><sub><b>kanwarpreet25</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=kanwarpreet25" title="Code">💻</a></td>
     <td align="center"><a href="http://leonmak.me"><img src="https://avatars3.githubusercontent.com/u/13071508?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Leon Mak</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=leonmak" title="Code">💻</a></td>
     <td align="center"><a href="http://www.wramdemark.se"><img src="https://avatars2.githubusercontent.com/u/7052193?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Per Wramdemark</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=perwramdemark" title="Code">💻</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://github.com/waisuan"><img src="https://avatars2.githubusercontent.com/u/10975700?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Evan Sia Wai Suan</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=waisuan" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/AnaghaSasikumar"><img src="https://avatars2.githubusercontent.com/u/42939261?v=4?s=100" width="100px;" alt=""/><br /><sub><b>AnaghaSasikumar</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=AnaghaSasikumar" title="Code">💻</a></td>
     <td align="center"><a href="https://christofferh.com"><img src="https://avatars1.githubusercontent.com/u/767643?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Christoffer Hamberg</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=christofferh" title="Code">💻</a></td>
@@ -194,38 +179,32 @@ This project is licensed under the terms of the MIT license.
     <td align="center"><a href="https://github.com/leogtzr"><img src="https://avatars0.githubusercontent.com/u/1211969?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Leo Gutiérrez Ramírez</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=leogtzr" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/npczwh"><img src="https://avatars0.githubusercontent.com/u/14066422?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Zhang WH</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=npczwh" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/oconnelc"><img src="https://avatars0.githubusercontent.com/u/1112973?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Christopher O'Connell</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=oconnelc" title="Code">💻</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://github.com/giorgosmav21"><img src="https://avatars2.githubusercontent.com/u/22855493?v=4?s=100" width="100px;" alt=""/><br /><sub><b>George Mavroeidis</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=giorgosmav21" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/hbothra15"><img src="https://avatars1.githubusercontent.com/u/7418012?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Hemant Bothra</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=hbothra15" title="Code">💻</a> <a href="#design-hbothra15" title="Design">🎨</a></td>
     <td align="center"><a href="https://www.kevinpeters.net/about/"><img src="https://avatars1.githubusercontent.com/u/12736734?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Kevin Peters</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=igeligel" title="Code">💻</a></td>
-    <td align="center"><a href="https://llorllale.github.io/"><img src="https://avatars1.githubusercontent.com/u/2019896?v=4?s=100" width="100px;" alt=""/><br /><sub><b>George Aristy</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=llorllale" title="Code">💻</a></td>
   </tr>
   <tr>
+    <td align="center"><a href="https://llorllale.github.io/"><img src="https://avatars1.githubusercontent.com/u/2019896?v=4?s=100" width="100px;" alt=""/><br /><sub><b>George Aristy</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=llorllale" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/mookkiah"><img src="https://avatars1.githubusercontent.com/u/8975264?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Mahendran Mookkiah</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=mookkiah" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/Azureyjt"><img src="https://avatars2.githubusercontent.com/u/18476317?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Azureyjt</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Azureyjt" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/vehpsr"><img src="https://avatars2.githubusercontent.com/u/3133265?v=4?s=100" width="100px;" alt=""/><br /><sub><b>gans</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=vehpsr" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/ThatGuyWithTheHat"><img src="https://avatars0.githubusercontent.com/u/24470582?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Matt</b></sub></a><br /><a href="#content-ThatGuyWithTheHat" title="Content">🖋</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://www.linkedin.com/in/gopinathlangote/"><img src="https://avatars2.githubusercontent.com/u/10210778?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Gopinath Langote</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=gopinath-langote" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/hoswey"><img src="https://avatars3.githubusercontent.com/u/3689445?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Hoswey</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=hoswey" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/amit2103"><img src="https://avatars3.githubusercontent.com/u/7566692?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Amit Pandey</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=amit2103" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/gwildor28"><img src="https://avatars0.githubusercontent.com/u/16000365?v=4?s=100" width="100px;" alt=""/><br /><sub><b>gwildor28</b></sub></a><br /><a href="#content-gwildor28" title="Content">🖋</a></td>
   </tr>
   <tr>
+    <td align="center"><a href="https://github.com/amit2103"><img src="https://avatars3.githubusercontent.com/u/7566692?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Amit Pandey</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=amit2103" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/gwildor28"><img src="https://avatars0.githubusercontent.com/u/16000365?v=4?s=100" width="100px;" alt=""/><br /><sub><b>gwildor28</b></sub></a><br /><a href="#content-gwildor28" title="Content">🖋</a></td>
     <td align="center"><a href="https://t.me/paul_docker"><img src="https://avatars1.githubusercontent.com/u/2404785?v=4?s=100" width="100px;" alt=""/><br /><sub><b>田浩</b></sub></a><br /><a href="#content-llitfkitfk" title="Content">🖋</a></td>
     <td align="center"><a href="https://twitter.com/StPitsios"><img src="https://avatars1.githubusercontent.com/u/6773603?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Stamatis Pitsios</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=pitsios-s" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/qza"><img src="https://avatars3.githubusercontent.com/u/233149?v=4?s=100" width="100px;" alt=""/><br /><sub><b>qza</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=qza" title="Code">💻</a></td>
     <td align="center"><a href="http://tschis.github.io"><img src="https://avatars1.githubusercontent.com/u/20662669?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rodolfo Forte</b></sub></a><br /><a href="#content-Tschis" title="Content">🖋</a></td>
+    <td align="center"><a href="https://github.com/ankurkaushal"><img src="https://avatars2.githubusercontent.com/u/2236616?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ankur Kaushal</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=ankurkaushal" title="Code">💻</a></td>
   </tr>
   <tr>
-    <td align="center"><a href="https://github.com/ankurkaushal"><img src="https://avatars2.githubusercontent.com/u/2236616?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ankur Kaushal</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=ankurkaushal" title="Code">💻</a></td>
     <td align="center"><a href="https://www.linkedin.com/in/ovidijus-okinskas/"><img src="https://avatars0.githubusercontent.com/u/20372387?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ovidijus Okinskas</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=okinskas" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/robertt240"><img src="https://avatars1.githubusercontent.com/u/9137432?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Robert Kasperczyk</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=robertt240" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/trautonen"><img src="https://avatars3.githubusercontent.com/u/1641063?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Tapio Rautonen</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=trautonen" title="Code">💻</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="http://vk.com/yuri.orlov"><img src="https://avatars0.githubusercontent.com/u/1595733?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Yuri Orlov</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=yorlov" title="Code">💻</a></td>
     <td align="center"><a href="https://www.linkedin.com/in/varunu28/"><img src="https://avatars0.githubusercontent.com/u/7676016?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Varun Upadhyay</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=varunu28" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/PalAditya"><img src="https://avatars2.githubusercontent.com/u/25523604?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Aditya Pal</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=PalAditya" title="Code">💻</a></td>
@@ -236,50 +215,41 @@ This project is licensed under the terms of the MIT license.
     <td align="center"><a href="https://github.com/d4gg4d"><img src="https://avatars2.githubusercontent.com/u/99457?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Sami Airaksinen</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=d4gg4d" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/vertti"><img src="https://avatars0.githubusercontent.com/u/557751?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Janne Sinivirta</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=vertti" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/Bobo1239"><img src="https://avatars1.githubusercontent.com/u/2302947?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Boris-Chengbiao Zhou</b></sub></a><br /><a href="#content-Bobo1239" title="Content">🖋</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://jahhein.github.io"><img src="https://avatars2.githubusercontent.com/u/10779515?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jacob Hein</b></sub></a><br /><a href="#content-Jahhein" title="Content">🖋</a></td>
     <td align="center"><a href="https://github.com/iamrichardjones"><img src="https://avatars3.githubusercontent.com/u/14842151?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Richard Jones</b></sub></a><br /><a href="#content-iamrichardjones" title="Content">🖋</a></td>
     <td align="center"><a href="https://rachelcarmena.github.io"><img src="https://avatars0.githubusercontent.com/u/22792183?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rachel M. Carmena</b></sub></a><br /><a href="#content-rachelcarmena" title="Content">🖋</a></td>
-    <td align="center"><a href="https://zd-zero.github.io"><img src="https://avatars0.githubusercontent.com/u/21978370?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Zaerald Denze Lungos</b></sub></a><br /><a href="#content-zd-zero" title="Content">🖋</a></td>
   </tr>
   <tr>
+    <td align="center"><a href="https://zd-zero.github.io"><img src="https://avatars0.githubusercontent.com/u/21978370?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Zaerald Denze Lungos</b></sub></a><br /><a href="#content-zd-zero" title="Content">🖋</a></td>
     <td align="center"><a href="https://webpro.nl"><img src="https://avatars1.githubusercontent.com/u/456426?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Lars Kappert</b></sub></a><br /><a href="#content-webpro" title="Content">🖋</a></td>
     <td align="center"><a href="https://xiaod.info"><img src="https://avatars2.githubusercontent.com/u/21277644?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Mike Liu</b></sub></a><br /><a href="#translation-xiaod-dev" title="Translation">🌍</a></td>
     <td align="center"><a href="https://github.com/charlesfinley"><img src="https://avatars1.githubusercontent.com/u/6307904?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Matt Dolan</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=charlesfinley" title="Code">💻</a> <a href="https://github.com/iluwatar/java-design-patterns/pulls?q=is%3Apr+reviewed-by%3Acharlesfinley" title="Reviewed Pull Requests">👀</a></td>
     <td align="center"><a href="https://github.com/MananS77"><img src="https://avatars3.githubusercontent.com/u/21033516?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Manan</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/pulls?q=is%3Apr+reviewed-by%3AMananS77" title="Reviewed Pull Requests">👀</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://github.com/nishant"><img src="https://avatars2.githubusercontent.com/u/15331971?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Nishant Arora</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=nishant" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/raja-peeyush-kumar-singh"><img src="https://avatars0.githubusercontent.com/u/5496024?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Peeyush</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=raja-peeyush-kumar-singh" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/ravening"><img src="https://avatars1.githubusercontent.com/u/10645273?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rakesh</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=ravening" title="Code">💻</a> <a href="https://github.com/iluwatar/java-design-patterns/pulls?q=is%3Apr+reviewed-by%3Aravening" title="Reviewed Pull Requests">👀</a></td>
-    <td align="center"><a href="https://github.com/vINCENT8888801"><img src="https://avatars0.githubusercontent.com/u/8037883?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Wei Seng</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=vINCENT8888801" title="Code">💻</a></td>
   </tr>
   <tr>
+    <td align="center"><a href="https://github.com/ravening"><img src="https://avatars1.githubusercontent.com/u/10645273?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rakesh</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=ravening" title="Code">💻</a> <a href="https://github.com/iluwatar/java-design-patterns/pulls?q=is%3Apr+reviewed-by%3Aravening" title="Reviewed Pull Requests">👀</a></td>
+    <td align="center"><a href="https://github.com/vINCENT8888801"><img src="https://avatars0.githubusercontent.com/u/8037883?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Wei Seng</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=vINCENT8888801" title="Code">💻</a></td>
     <td align="center"><a href="https://www.linkedin.com/in/ashish-trivedi-218379135/"><img src="https://avatars3.githubusercontent.com/u/23194128?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ashish Trivedi</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=ashishtrivedi16" title="Code">💻</a></td>
     <td align="center"><a href="https://rayyounghong.com"><img src="https://avatars1.githubusercontent.com/u/41055099?v=4?s=100" width="100px;" alt=""/><br /><sub><b>洪月阳</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=RayYH" title="Code">💻</a></td>
     <td align="center"><a href="https://xdvrx1.github.io/"><img src="https://avatars0.githubusercontent.com/u/47092464?v=4?s=100" width="100px;" alt=""/><br /><sub><b>xdvrx1</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/pulls?q=is%3Apr+reviewed-by%3Axdvrx1" title="Reviewed Pull Requests">👀</a> <a href="#ideas-xdvrx1" title="Ideas, Planning, & Feedback">🤔</a></td>
-    <td align="center"><a href="http://subho.xyz"><img src="https://avatars0.githubusercontent.com/u/13291222?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Subhrodip Mohanta</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=ohbus" title="Code">💻</a> <a href="https://github.com/iluwatar/java-design-patterns/pulls?q=is%3Apr+reviewed-by%3Aohbus" title="Reviewed Pull Requests">👀</a> <a href="#maintenance-ohbus" title="Maintenance">🚧</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://github.com/nahteb"><img src="https://avatars3.githubusercontent.com/u/13121570?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Bethan Palmer</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=nahteb" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/ToxicDreamz"><img src="https://avatars0.githubusercontent.com/u/45225562?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Toxic Dreamz</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=ToxicDreamz" title="Code">💻</a></td>
-    <td align="center"><a href="http://www.edycutjong.com"><img src="https://avatars1.githubusercontent.com/u/1098102?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Edy Cu Tjong</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=edycutjong" title="Documentation">📖</a></td>
-    <td align="center"><a href="https://github.com/mkrzywanski"><img src="https://avatars0.githubusercontent.com/u/15279585?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Michał Krzywański</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=mkrzywanski" title="Code">💻</a></td>
   </tr>
   <tr>
+    <td align="center"><a href="http://www.edycutjong.com"><img src="https://avatars1.githubusercontent.com/u/1098102?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Edy Cu Tjong</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=edycutjong" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/mkrzywanski"><img src="https://avatars0.githubusercontent.com/u/15279585?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Michał Krzywański</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=mkrzywanski" title="Code">💻</a></td>
     <td align="center"><a href="https://www.stefan-birkner.de"><img src="https://avatars1.githubusercontent.com/u/711349?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Stefan Birkner</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=stefanbirkner" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/fedorskvorcov"><img src="https://avatars3.githubusercontent.com/u/43882212?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Fedor Skvorcov</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=fedorskvorcov" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/samilAyoub"><img src="https://avatars0.githubusercontent.com/u/61546990?v=4?s=100" width="100px;" alt=""/><br /><sub><b>samilAyoub</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=samilAyoub" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/vdlald"><img src="https://avatars0.githubusercontent.com/u/29997701?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Vladislav Golubinov</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=vdlald" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/swarajsaaj"><img src="https://avatars2.githubusercontent.com/u/6285049?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Swaraj</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=swarajsaaj" title="Code">💻</a></td>
   </tr>
   <tr>
-    <td align="center"><a href="https://github.com/swarajsaaj"><img src="https://avatars2.githubusercontent.com/u/6285049?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Swaraj</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=swarajsaaj" title="Code">💻</a></td>
     <td align="center"><a href="http://christophflick.de"><img src="https://avatars0.githubusercontent.com/u/4465376?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Christoph Flick</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=ChFlick" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/Ascenio"><img src="https://avatars1.githubusercontent.com/u/7662016?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ascênio</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/pulls?q=is%3Apr+reviewed-by%3AAscenio" title="Reviewed Pull Requests">👀</a></td>
     <td align="center"><a href="https://www.linkedin.com/in/domenico-sibilio/"><img src="https://avatars2.githubusercontent.com/u/24280982?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Domenico Sibilio</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=dsibilio" title="Documentation">📖</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://github.com/akashchandwani"><img src="https://avatars2.githubusercontent.com/u/3483277?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Akash Chandwani</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/pulls?q=is%3Apr+reviewed-by%3Aakashchandwani" title="Reviewed Pull Requests">👀</a></td>
     <td align="center"><a href="http://www.linkedin.com/in/manannikov"><img src="https://avatars2.githubusercontent.com/u/7019769?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Pavlo Manannikov</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=manannikov" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/eimanip"><img src="https://avatars0.githubusercontent.com/u/20307301?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Eiman</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=eimanip" title="Code">💻</a></td>
@@ -290,38 +260,32 @@ This project is licensed under the terms of the MIT license.
     <td align="center"><a href="https://github.com/gkulkarni2020"><img src="https://avatars3.githubusercontent.com/u/5161548?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Girish Kulkarni</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=gkulkarni2020" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/omk13"><img src="https://avatars0.githubusercontent.com/u/59054172?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Omar Karazoun</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=omk13" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/jeff303"><img src="https://avatars0.githubusercontent.com/u/3521562?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jeff Evans</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=jeff303" title="Code">💻</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://viveksb007.github.io"><img src="https://avatars1.githubusercontent.com/u/12713808?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Vivek Singh</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=viveksb007" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/siavashsoleymani"><img src="https://avatars2.githubusercontent.com/u/18074419?v=4?s=100" width="100px;" alt=""/><br /><sub><b>siavash</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=siavashsoleymani" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/ruchpeanuts"><img src="https://avatars0.githubusercontent.com/u/29301900?v=4?s=100" width="100px;" alt=""/><br /><sub><b>ruchpeanuts</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=ruchpeanuts" title="Documentation">📖</a></td>
-    <td align="center"><a href="https://github.com/warp125"><img src="https://avatars1.githubusercontent.com/u/48073115?v=4?s=100" width="100px;" alt=""/><br /><sub><b>warp125</b></sub></a><br /><a href="#translation-warp125" title="Translation">🌍</a></td>
   </tr>
   <tr>
+    <td align="center"><a href="https://github.com/warp125"><img src="https://avatars1.githubusercontent.com/u/48073115?v=4?s=100" width="100px;" alt=""/><br /><sub><b>warp125</b></sub></a><br /><a href="#translation-warp125" title="Translation">🌍</a></td>
     <td align="center"><a href="http://libkhadir.fr"><img src="https://avatars1.githubusercontent.com/u/45130488?v=4?s=100" width="100px;" alt=""/><br /><sub><b>KHADIR Tayeb</b></sub></a><br /><a href="#translation-tkhadir" title="Translation">🌍</a></td>
     <td align="center"><a href="https://github.com/ignite1771"><img src="https://avatars2.githubusercontent.com/u/59446563?v=4?s=100" width="100px;" alt=""/><br /><sub><b>ignite1771</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=ignite1771" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/demirhalil"><img src="https://avatars1.githubusercontent.com/u/22895118?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Halil Demir</b></sub></a><br /><a href="#translation-demirhalil" title="Translation">🌍</a></td>
     <td align="center"><a href="https://github.com/rohit10000"><img src="https://avatars.githubusercontent.com/u/20845565?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rohit Singh</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=rohit10000" title="Code">💻</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://github.com/byoungju94"><img src="https://avatars.githubusercontent.com/u/42516378?v=4?s=100" width="100px;" alt=""/><br /><sub><b>byoungju94</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=byoungju94" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/moustafafarhat"><img src="https://avatars.githubusercontent.com/u/38836727?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Moustafa Farhat</b></sub></a><br /><a href="#translation-moustafafarhat" title="Translation">🌍</a></td>
-    <td align="center"><a href="https://github.com/richardmr36"><img src="https://avatars.githubusercontent.com/u/19147333?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Martel Richard</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=richardmr36" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/va1m"><img src="https://avatars.githubusercontent.com/u/17025445?v=4?s=100" width="100px;" alt=""/><br /><sub><b>va1m</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=va1m" title="Code">💻</a></td>
   </tr>
   <tr>
+    <td align="center"><a href="https://github.com/richardmr36"><img src="https://avatars.githubusercontent.com/u/19147333?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Martel Richard</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=richardmr36" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/va1m"><img src="https://avatars.githubusercontent.com/u/17025445?v=4?s=100" width="100px;" alt=""/><br /><sub><b>va1m</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=va1m" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/noamgrinch"><img src="https://avatars.githubusercontent.com/u/31648669?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Noam Greenshtain</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=noamgrinch" title="Code">💻</a></td>
     <td align="center"><a href="https://xuyonghong.cn/"><img src="https://avatars.githubusercontent.com/u/14086462?v=4?s=100" width="100px;" alt=""/><br /><sub><b>yonghong Xu</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=qfxl" title="Documentation">📖</a></td>
     <td align="center"><a href="https://www.linkedin.com/in/jinisha-vora"><img src="https://avatars.githubusercontent.com/u/40777762?v=4?s=100" width="100px;" alt=""/><br /><sub><b>jinishavora</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/pulls?q=is%3Apr+reviewed-by%3Ajinishavora" title="Reviewed Pull Requests">👀</a> <a href="https://github.com/iluwatar/java-design-patterns/commits?author=jinishavora" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/eas5"><img src="https://avatars.githubusercontent.com/u/50836521?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Elvys Soares</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=eas5" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/zWeBrain"><img src="https://avatars.githubusercontent.com/u/46642512?v=4?s=100" width="100px;" alt=""/><br /><sub><b>zWeBrain</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=zWeBrain" title="Code">💻</a></td>
   </tr>
   <tr>
-    <td align="center"><a href="https://github.com/zWeBrain"><img src="https://avatars.githubusercontent.com/u/46642512?v=4?s=100" width="100px;" alt=""/><br /><sub><b>zWeBrain</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=zWeBrain" title="Code">💻</a></td>
     <td align="center"><a href="https://al-assad.github.io/notion/"><img src="https://avatars.githubusercontent.com/u/22493821?v=4?s=100" width="100px;" alt=""/><br /><sub><b>余林颖</b></sub></a><br /><a href="#translation-Al-assad" title="Translation">🌍</a></td>
     <td align="center"><a href="https://github.com/STudio26"><img src="https://avatars.githubusercontent.com/u/6988911?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Alain</b></sub></a><br /><a href="#translation-STudio26" title="Translation">🌍</a></td>
     <td align="center"><a href="https://github.com/DEV-VRUPER"><img src="https://avatars.githubusercontent.com/u/30525467?v=4?s=100" width="100px;" alt=""/><br /><sub><b>VR</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=DEV-VRUPER" title="Documentation">📖</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://github.com/JackieNim"><img src="https://avatars.githubusercontent.com/u/4138836?v=4?s=100" width="100px;" alt=""/><br /><sub><b>JackieNim</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=JackieNim" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/EdisonE3"><img src="https://avatars.githubusercontent.com/u/52118917?v=4?s=100" width="100px;" alt=""/><br /><sub><b>EdisonE3</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=EdisonE3" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/tao-sun2"><img src="https://avatars.githubusercontent.com/u/66189688?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Tao</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=tao-sun2" title="Code">💻</a></td>
@@ -332,17 +296,30 @@ This project is licensed under the terms of the MIT license.
     <td align="center"><a href="https://www.linkedin.com/in/souzasamuel/"><img src="https://avatars.githubusercontent.com/u/17254162?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Samuel Souza</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=samuelpsouza" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/marlo2222"><img src="https://avatars.githubusercontent.com/u/40809563?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Marlo Henrique</b></sub></a><br /><a href="#translation-marlo2222" title="Translation">🌍</a></td>
     <td align="center"><a href="https://github.com/AndriyPyzh"><img src="https://avatars.githubusercontent.com/u/57706635?v=4?s=100" width="100px;" alt=""/><br /><sub><b>AndriyPyzh</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=AndriyPyzh" title="Code">💻</a></td>
-  </tr>
-  <tr>
     <td align="center"><a href="https://github.com/karthikbhat13"><img src="https://avatars.githubusercontent.com/u/22431014?v=4?s=100" width="100px;" alt=""/><br /><sub><b>karthikbhat13</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=karthikbhat13" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/mortezaadi"><img src="https://avatars.githubusercontent.com/u/1329687?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Morteza Adigozalpour</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=mortezaadi" title="Code">💻</a></td>
     <td align="center"><a href="https://stackoverflow.com/users/308565/nagaraj-tantri"><img src="https://avatars.githubusercontent.com/u/3784194?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Nagaraj Tantri</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=tan31989" title="Code">💻</a></td>
-    <td align="center"><a href="http://scuccimarri.it"><img src="https://avatars.githubusercontent.com/u/7107651?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Francesco Scuccimarri</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=frascu" title="Code">💻</a></td>
   </tr>
   <tr>
+    <td align="center"><a href="http://scuccimarri.it"><img src="https://avatars.githubusercontent.com/u/7107651?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Francesco Scuccimarri</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=frascu" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/Conhan93"><img src="https://avatars.githubusercontent.com/u/71334757?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Conny Hansson</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Conhan93" title="Documentation">📖</a></td>
     <td align="center"><a href="http://muklasr.medium.com"><img src="https://avatars.githubusercontent.com/u/43443753?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Muklas Rahmanto</b></sub></a><br /><a href="#translation-muklasr" title="Translation">🌍</a></td>
     <td align="center"><a href="https://github.com/VxDxK"><img src="https://avatars.githubusercontent.com/u/38704817?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Vadim</b></sub></a><br /><a href="#translation-VxDxK" title="Translation">🌍</a></td>
+    <td align="center"><a href="https://github.com/sims-keshri"><img src="https://avatars.githubusercontent.com/u/62168475?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Simran Keshri</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=sims-keshri" title="Code">💻</a></td>
+    <td align="center"><a href="https://programacionymas.com"><img src="https://avatars.githubusercontent.com/u/3101238?v=4?s=100" width="100px;" alt=""/><br /><sub><b>JCarlos</b></sub></a><br /><a href="#translation-JCarlosR" title="Translation">🌍</a></td>
+    <td align="center"><a href="https://www.mrmoshkel.ir"><img src="https://avatars.githubusercontent.com/u/60359433?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ali Ghasemi</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Dev-AliGhasemi" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="http://carlfx.wordpress.com"><img src="https://avatars.githubusercontent.com/u/1594624?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Carl Dea</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=carldea" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/Mozartuss"><img src="https://avatars.githubusercontent.com/u/32893711?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Mozartus</b></sub></a><br /><a href="#translation-Mozartuss" title="Translation">🌍</a></td>
+    <td align="center"><a href="https://github.com/ManviGoel26"><img src="https://avatars.githubusercontent.com/u/55682355?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Manvi Goel</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=ManviGoel26" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/blueberry404"><img src="https://avatars.githubusercontent.com/u/39243539?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Anum Amin</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=blueberry404" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://uh-zz.github.io/blog/"><img src="https://avatars.githubusercontent.com/u/47747828?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Reo Uehara</b></sub></a><br /><a href="#translation-uh-zz" title="Translation">🌍</a></td>
+    <td align="center"><a href="https://github.com/Fiordy"><img src="https://avatars.githubusercontent.com/u/53420573?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Fiordy</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=Fiordy" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/harshalkh"><img src="https://avatars.githubusercontent.com/u/37841724?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Harshal</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=harshalkh" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://www.linkedin.com/in/abhinav-vashisth-06613b208/"><img src="https://avatars.githubusercontent.com/u/89785800?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Abhinav Vashisth</b></sub></a><br /><a href="https://github.com/iluwatar/java-design-patterns/commits?author=vashisthabhinav" title="Documentation">📖</a></td>
   </tr>
 </table>
 

abstract-document/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Abstract Document
-category: Structural
+folder: abstract-document
+permalink: /patterns/abstract-document/
+categories: Structural
 language: en
 tags: 
  - Extensibility

abstract-document/pom.xml

@@ -23,42 +23,40 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  <modelVersion>4.0.0</modelVersion>
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <parent>
-	<modelVersion>4.0.0</modelVersion>
+    <artifactId>java-design-patterns</artifactId>
-	<parent>
+    <groupId>com.iluwatar</groupId>
-		<artifactId>java-design-patterns</artifactId>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<version>1.25.0-SNAPSHOT</version>
+  <artifactId>abstract-document</artifactId>
-	</parent>
+  <dependencies>
-	<artifactId>abstract-document</artifactId>
+    <dependency>
-	<dependencies>
+      <groupId>org.junit.jupiter</groupId>
-		<dependency>
+      <artifactId>junit-jupiter-engine</artifactId>
-			<groupId>org.junit.jupiter</groupId>
+      <scope>test</scope>
-			<artifactId>junit-jupiter-engine</artifactId>
+    </dependency>
-			<scope>test</scope>
+  </dependencies>
-		</dependency>
+  <build>
-	</dependencies>
+    <plugins>
-	<build>
+      <!-- Maven assembly plugin is invoked with default setting which we have 
-		<plugins>
-			<!-- Maven assembly plugin is invoked with default setting which we have 
 				in parent pom and specifying the class having main method -->
-			<plugin>
+      <plugin>
-				<groupId>org.apache.maven.plugins</groupId>
+        <groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-assembly-plugin</artifactId>
+        <artifactId>maven-assembly-plugin</artifactId>
-				<executions>
+        <executions>
-					<execution>
+          <execution>
-						<configuration>
+            <configuration>
-							<archive>
+              <archive>
-								<manifest>
+                <manifest>
-									<mainClass>com.iluwatar.abstractdocument.App</mainClass>
+                  <mainClass>com.iluwatar.abstractdocument.App</mainClass>
-								</manifest>
+                </manifest>
-							</archive>
+              </archive>
-						</configuration>
+            </configuration>
-					</execution>
+          </execution>
-				</executions>
+        </executions>
-			</plugin>
+      </plugin>
-		</plugins>
+    </plugins>
-	</build>
+  </build>
 </project>

abstract-factory/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Abstract Factory
-category: Creational
+folder: abstract-factory
+permalink: /patterns/abstract-factory/
+categories: Creational
 language: en
 tags:
  - Gang of Four
@@ -84,24 +87,36 @@ public interface KingdomFactory {
 }
 
 public class ElfKingdomFactory implements KingdomFactory {
+
+  @Override
   public Castle createCastle() {
     return new ElfCastle();
   }
+
+  @Override
   public King createKing() {
     return new ElfKing();
   }
+
+  @Override
   public Army createArmy() {
     return new ElfArmy();
   }
 }
 
 public class OrcKingdomFactory implements KingdomFactory {
+
+  @Override
   public Castle createCastle() {
     return new OrcCastle();
   }
+
+  @Override
   public King createKing() {
     return new OrcKing();
   }
+  
+  @Override
   public Army createArmy() {
     return new OrcArmy();
   }

abstract-factory/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,43 +23,40 @@
     THE SOFTWARE.
 
 -->
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+  <modelVersion>4.0.0</modelVersion>
-	xmlns="http://maven.apache.org/POM/4.0.0"
+  <parent>
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <groupId>com.iluwatar</groupId>
-	<modelVersion>4.0.0</modelVersion>
+    <artifactId>java-design-patterns</artifactId>
-	<parent>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<artifactId>java-design-patterns</artifactId>
+  <artifactId>abstract-factory</artifactId>
-		<version>1.25.0-SNAPSHOT</version>
+  <dependencies>
-	</parent>
+    <dependency>
-	<artifactId>abstract-factory</artifactId>
+      <groupId>org.junit.jupiter</groupId>
-	<dependencies>
+      <artifactId>junit-jupiter-engine</artifactId>
-		<dependency>
+      <scope>test</scope>
-			<groupId>org.junit.jupiter</groupId>
+    </dependency>
-			<artifactId>junit-jupiter-engine</artifactId>
+  </dependencies>
-			<scope>test</scope>
+  <build>
-		</dependency>
+    <plugins>
-	</dependencies>
+      <!-- Maven assembly plugin is invoked with default setting which we have 
-	<build>
-		<plugins>
-			<!-- Maven assembly plugin is invoked with default setting which we have 
 				in parent pom and specifying the class having main method -->
-			<plugin>
+      <plugin>
-				<groupId>org.apache.maven.plugins</groupId>
+        <groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-assembly-plugin</artifactId>
+        <artifactId>maven-assembly-plugin</artifactId>
-				<executions>
+        <executions>
-					<execution>
+          <execution>
-						<configuration>
+            <configuration>
-							<archive>
+              <archive>
-								<manifest>
+                <manifest>
-									<mainClass>com.iluwatar.abstractfactory.App</mainClass>
+                  <mainClass>com.iluwatar.abstractfactory.App</mainClass>
-								</manifest>
+                </manifest>
-							</archive>
+              </archive>
-						</configuration>
+            </configuration>
-					</execution>
+          </execution>
-				</executions>
+        </executions>
-			</plugin>
+      </plugin>
-		</plugins>
+    </plugins>
-	</build>
+  </build>
 </project>

active-object/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Active Object
-category: Concurrency
+folder: active-object
+permalink: /patterns/active-object/
+categories: Concurrency
 language: en
 tags:
  - Performance
@@ -121,3 +124,7 @@ Now, we can create multiple creatures such as Orcs, tell them to eat and roam, a
 ## Class diagram
 
 ![alt text](./etc/active-object.urm.png "Active Object class diagram")
+
+## Tutorials
+
+* [Android and Java Concurrency: The Active Object Pattern](https://www.youtube.com/watch?v=Cd8t2u5Qmvc)

active-object/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,43 +23,40 @@
     THE SOFTWARE.
 
 -->
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+  <modelVersion>4.0.0</modelVersion>
-	xmlns="http://maven.apache.org/POM/4.0.0"
+  <parent>
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <groupId>com.iluwatar</groupId>
-	<modelVersion>4.0.0</modelVersion>
+    <artifactId>java-design-patterns</artifactId>
-	<parent>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<artifactId>java-design-patterns</artifactId>
+  <artifactId>active-object</artifactId>
-		<version>1.25.0-SNAPSHOT</version>
+  <dependencies>
-	</parent>
+    <dependency>
-	<artifactId>active-object</artifactId>
+      <groupId>org.junit.jupiter</groupId>
-	<dependencies>
+      <artifactId>junit-jupiter-engine</artifactId>
-		<dependency>
+      <scope>test</scope>
-			<groupId>org.junit.jupiter</groupId>
+    </dependency>
-			<artifactId>junit-jupiter-engine</artifactId>
+  </dependencies>
-			<scope>test</scope>
+  <build>
-		</dependency>
+    <plugins>
-	</dependencies>
+      <!-- Maven assembly plugin is invoked with default setting which we have 
-	<build>
-		<plugins>
-			<!-- Maven assembly plugin is invoked with default setting which we have 
 				in parent pom and specifying the class having main method -->
-			<plugin>
+      <plugin>
-				<groupId>org.apache.maven.plugins</groupId>
+        <groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-assembly-plugin</artifactId>
+        <artifactId>maven-assembly-plugin</artifactId>
-				<executions>
+        <executions>
-					<execution>
+          <execution>
-						<configuration>
+            <configuration>
-							<archive>
+              <archive>
-								<manifest>
+                <manifest>
-									<mainClass>com.iluwatar.activeobject.App</mainClass>
+                  <mainClass>com.iluwatar.activeobject.App</mainClass>
-								</manifest>
+                </manifest>
-							</archive>
+              </archive>
-						</configuration>
+            </configuration>
-					</execution>
+          </execution>
-				</executions>
+        </executions>
-			</plugin>
+      </plugin>
-		</plugins>
+    </plugins>
-	</build>
+  </build>
 </project>

acyclic-visitor/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Acyclic Visitor
-category: Behavioral
+folder: acyclic-visitor
+permalink: /patterns/acyclic-visitor/
+categories: Behavioral
 language: en
 tags:
  - Extensibility
@@ -135,6 +138,10 @@ This pattern can be used:
 * When the visited class hierarchy will be frequently extended with new derivatives of the Element class.
 * When the recompilation, relinking, retesting or redistribution of the derivatives of Element is very expensive.
 
+## Tutorial
+
+* [Acyclic Visitor Pattern Example](https://codecrafter.blogspot.com/2012/12/the-acyclic-visitor-pattern.html)
+
 ## Consequences
 
 The good:

acyclic-visitor/pom.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -22,53 +23,47 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  <modelVersion>4.0.0</modelVersion>
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <parent>
-	<modelVersion>4.0.0</modelVersion>
+    <groupId>com.iluwatar</groupId>
-
+    <artifactId>java-design-patterns</artifactId>
-	<parent>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<artifactId>java-design-patterns</artifactId>
+  <artifactId>acyclic-visitor</artifactId>
-		<version>1.25.0-SNAPSHOT</version>
+  <properties>
-	</parent>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-
+    <maven.compiler.source>1.8</maven.compiler.source>
-	<artifactId>acyclic-visitor</artifactId>
+    <maven.compiler.target>1.8</maven.compiler.target>
-
+  </properties>
-	<properties>
+  <dependencies>
-		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <!-- https://mvnrepository.com/artifact/org.assertj/assertj-core -->
-		<maven.compiler.source>1.8</maven.compiler.source>
+    <dependency>
-		<maven.compiler.target>1.8</maven.compiler.target>
+      <groupId>org.assertj</groupId>
-	</properties>
+      <artifactId>assertj-core</artifactId>
-
+      <version>3.9.1</version>
-	<dependencies>
+      <scope>test</scope>
-		<!-- https://mvnrepository.com/artifact/org.assertj/assertj-core -->
+    </dependency>
-		<dependency>
+    <!-- https://mvnrepository.com/artifact/uk.org.lidalia/slf4j-test -->
-			<groupId>org.assertj</groupId>
+    <dependency>
-			<artifactId>assertj-core</artifactId>
+      <groupId>uk.org.lidalia</groupId>
-			<version>3.9.1</version>
+      <artifactId>slf4j-test</artifactId>
-			<scope>test</scope>
+      <version>1.2.0</version>
-		</dependency>
+      <scope>test</scope>
-		<!-- https://mvnrepository.com/artifact/uk.org.lidalia/slf4j-test -->
+    </dependency>
-		<dependency>
+    <dependency>
-			<groupId>uk.org.lidalia</groupId>
+      <groupId>org.junit.jupiter</groupId>
-			<artifactId>slf4j-test</artifactId>
+      <artifactId>junit-jupiter-engine</artifactId>
-			<version>1.2.0</version>
+      <scope>test</scope>
-			<scope>test</scope>
+    </dependency>
-		</dependency>
+    <dependency>
-		<dependency>
+      <groupId>org.mockito</groupId>
-			<groupId>org.junit.jupiter</groupId>
+      <artifactId>mockito-all</artifactId>
-			<artifactId>junit-jupiter-engine</artifactId>
+      <version>1.10.19</version>
-			<scope>test</scope>
+      <scope>test</scope>
-		</dependency>
+    </dependency>
-		<dependency>
+  </dependencies>
-			<groupId>org.mockito</groupId>
+  <build>
-			<artifactId>mockito-all</artifactId>
-			<version>1.10.19</version>
-			<scope>test</scope>
-		</dependency>
-	</dependencies>
-	<build>
     <plugins>
       <!-- Maven assembly plugin is invoked with default setting which we have 
         in parent pom and specifying the class having main method -->

adapter/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Adapter
-category: Structural
+folder: adapter
+permalink: /patterns/adapter/
+categories: Structural
 language: en
 tags:
  - Gang of Four
@@ -102,6 +105,12 @@ Use the Adapter pattern when
 * you need to use several existing subclasses, but it's impractical to adapt their interface by subclassing every one. An object adapter can adapt the interface of its parent class.
 * most of the applications using third party libraries use adapters as a middle layer between the application and the 3rd party library to decouple the application from the library. If another library has to be used only an adapter for the new library is required without having to change the application code.
 
+## Tutorials
+
+* [Dzone](https://dzone.com/articles/adapter-design-pattern-in-java)
+* [Refactoring Guru](https://refactoring.guru/design-patterns/adapter/java/example)
+* [Baeldung](https://www.baeldung.com/java-adapter-pattern)
+
 ## Consequences
 Class and object adapters have different trade-offs. A class adapter
 

adapter/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,48 +23,45 @@
     THE SOFTWARE.
 
 -->
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+  <modelVersion>4.0.0</modelVersion>
-	xmlns="http://maven.apache.org/POM/4.0.0"
+  <parent>
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <groupId>com.iluwatar</groupId>
-	<modelVersion>4.0.0</modelVersion>
+    <artifactId>java-design-patterns</artifactId>
-	<parent>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<artifactId>java-design-patterns</artifactId>
+  <artifactId>adapter</artifactId>
-		<version>1.25.0-SNAPSHOT</version>
+  <dependencies>
-	</parent>
+    <dependency>
-	<artifactId>adapter</artifactId>
+      <groupId>org.junit.jupiter</groupId>
-	<dependencies>
+      <artifactId>junit-jupiter-engine</artifactId>
-		<dependency>
+      <scope>test</scope>
-			<groupId>org.junit.jupiter</groupId>
+    </dependency>
-			<artifactId>junit-jupiter-engine</artifactId>
+    <dependency>
-			<scope>test</scope>
+      <groupId>org.mockito</groupId>
-		</dependency>
+      <artifactId>mockito-core</artifactId>
-		<dependency>
+      <scope>test</scope>
-			<groupId>org.mockito</groupId>
+    </dependency>
-			<artifactId>mockito-core</artifactId>
+  </dependencies>
-			<scope>test</scope>
+  <build>
-		</dependency>
+    <plugins>
-	</dependencies>
+      <!-- Maven assembly plugin is invoked with default setting which we have 
-	<build>
-		<plugins>
-			<!-- Maven assembly plugin is invoked with default setting which we have 
 				in parent pom and specifying the class having main method -->
-			<plugin>
+      <plugin>
-				<groupId>org.apache.maven.plugins</groupId>
+        <groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-assembly-plugin</artifactId>
+        <artifactId>maven-assembly-plugin</artifactId>
-				<executions>
+        <executions>
-					<execution>
+          <execution>
-						<configuration>
+            <configuration>
-							<archive>
+              <archive>
-								<manifest>
+                <manifest>
-									<mainClass>com.iluwatar.adapter.App</mainClass>
+                  <mainClass>com.iluwatar.adapter.App</mainClass>
-								</manifest>
+                </manifest>
-							</archive>
+              </archive>
-						</configuration>
+            </configuration>
-					</execution>
+          </execution>
-				</executions>
+        </executions>
-			</plugin>
+      </plugin>
-		</plugins>
+    </plugins>
-	</build>
+  </build>
 </project>

aggregator-microservices/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Aggregator Microservices
-category: Architectural
+folder: aggregator-microservices
+permalink: /patterns/aggregator-microservices/
+categories: Architectural
 language: en
 tags:
 - Cloud distributed

aggregator-microservices/aggregator-service/pom.xml

@@ -23,68 +23,65 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  <parent>
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <artifactId>aggregator-microservices</artifactId>
-	<parent>
+    <groupId>com.iluwatar</groupId>
-		<artifactId>aggregator-microservices</artifactId>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<version>1.25.0-SNAPSHOT</version>
+  <modelVersion>4.0.0</modelVersion>
-	</parent>
+  <artifactId>aggregator-service</artifactId>
-	<modelVersion>4.0.0</modelVersion>
+  <packaging>jar</packaging>
-	<artifactId>aggregator-service</artifactId>
+  <dependencies>
-	<packaging>jar</packaging>
+    <dependency>
-	<dependencies>
+      <groupId>org.springframework</groupId>
-		<dependency>
+      <artifactId>spring-webmvc</artifactId>
-			<groupId>org.springframework</groupId>
+    </dependency>
-			<artifactId>spring-webmvc</artifactId>
+    <dependency>
-		</dependency>
+      <groupId>org.springframework.boot</groupId>
-		<dependency>
+      <artifactId>spring-boot-starter-web</artifactId>
-			<groupId>org.springframework.boot</groupId>
+    </dependency>
-			<artifactId>spring-boot-starter-web</artifactId>
+    <dependency>
-		</dependency>
+      <groupId>org.junit.jupiter</groupId>
-		<dependency>
+      <artifactId>junit-jupiter-engine</artifactId>
-			<groupId>org.junit.jupiter</groupId>
+      <scope>test</scope>
-			<artifactId>junit-jupiter-engine</artifactId>
+    </dependency>
-			<scope>test</scope>
+    <dependency>
-		</dependency>
+      <groupId>org.mockito</groupId>
-		<dependency>
+      <artifactId>mockito-core</artifactId>
-			<groupId>org.mockito</groupId>
+      <scope>test</scope>
-			<artifactId>mockito-core</artifactId>
+    </dependency>
-			<scope>test</scope>
+  </dependencies>
-		</dependency>
+  <build>
-	</dependencies>
+    <plugins>
-
+      <plugin>
-	<build>
+        <groupId>org.springframework.boot</groupId>
-		<plugins>
+        <artifactId>spring-boot-maven-plugin</artifactId>
-			<plugin>
+        <executions>
-				<groupId>org.springframework.boot</groupId>
+          <execution>
-				<artifactId>spring-boot-maven-plugin</artifactId>
+            <goals>
-				<executions>
+              <goal>repackage</goal>
-					<execution>
+            </goals>
-						<goals>
+          </execution>
-							<goal>repackage</goal>
+        </executions>
-						</goals>
+      </plugin>
-					</execution>
+      <!-- Maven assembly plugin is invoked with default setting which we have 
-				</executions>
-			</plugin>
-			<!-- Maven assembly plugin is invoked with default setting which we have 
 				in parent pom and specifying the class having main method -->
-			<plugin>
+      <plugin>
-				<groupId>org.apache.maven.plugins</groupId>
+        <groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-assembly-plugin</artifactId>
+        <artifactId>maven-assembly-plugin</artifactId>
-				<executions>
+        <executions>
-					<execution>
+          <execution>
-						<configuration>
+            <configuration>
-							<archive>
+              <archive>
-								<manifest>
+                <manifest>
-									<mainClass>com.iluwatar.aggregator.microservices.App</mainClass>
+                  <mainClass>com.iluwatar.aggregator.microservices.App</mainClass>
-								</manifest>
+                </manifest>
-							</archive>
+              </archive>
-						</configuration>
+            </configuration>
-					</execution>
+          </execution>
-				</executions>
+        </executions>
-			</plugin>
+      </plugin>
-		</plugins>
+    </plugins>
-	</build>
+  </build>
 </project>

aggregator-microservices/information-microservice/pom.xml

@@ -23,63 +23,58 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  <parent>
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <artifactId>aggregator-microservices</artifactId>
-	<parent>
+    <groupId>com.iluwatar</groupId>
-		<artifactId>aggregator-microservices</artifactId>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<version>1.25.0-SNAPSHOT</version>
+  <modelVersion>4.0.0</modelVersion>
-	</parent>
+  <artifactId>information-microservice</artifactId>
-	<modelVersion>4.0.0</modelVersion>
+  <packaging>jar</packaging>
-
+  <dependencies>
-	<artifactId>information-microservice</artifactId>
+    <dependency>
-	<packaging>jar</packaging>
+      <groupId>org.springframework</groupId>
-
+      <artifactId>spring-webmvc</artifactId>
-	<dependencies>
+    </dependency>
-		<dependency>
+    <dependency>
-			<groupId>org.springframework</groupId>
+      <groupId>org.springframework.boot</groupId>
-			<artifactId>spring-webmvc</artifactId>
+      <artifactId>spring-boot-starter-web</artifactId>
-		</dependency>
+    </dependency>
-		<dependency>
+    <dependency>
-			<groupId>org.springframework.boot</groupId>
+      <groupId>org.junit.jupiter</groupId>
-			<artifactId>spring-boot-starter-web</artifactId>
+      <artifactId>junit-jupiter-engine</artifactId>
-		</dependency>
+      <scope>test</scope>
-		<dependency>
+    </dependency>
-			<groupId>org.junit.jupiter</groupId>
+  </dependencies>
-			<artifactId>junit-jupiter-engine</artifactId>
+  <build>
-			<scope>test</scope>
+    <plugins>
-		</dependency>
+      <plugin>
-	</dependencies>
+        <groupId>org.springframework.boot</groupId>
-
+        <artifactId>spring-boot-maven-plugin</artifactId>
-	<build>
+        <executions>
-		<plugins>
+          <execution>
-			<plugin>
+            <goals>
-				<groupId>org.springframework.boot</groupId>
+              <goal>repackage</goal>
-				<artifactId>spring-boot-maven-plugin</artifactId>
+            </goals>
-				<executions>
+          </execution>
-					<execution>
+        </executions>
-						<goals>
+      </plugin>
-							<goal>repackage</goal>
+      <plugin>
-						</goals>
+        <groupId>org.apache.maven.plugins</groupId>
-					</execution>
+        <artifactId>maven-assembly-plugin</artifactId>
-				</executions>
+        <executions>
-			</plugin>
+          <execution>
-			<plugin>
+            <configuration>
-				<groupId>org.apache.maven.plugins</groupId>
+              <archive>
-				<artifactId>maven-assembly-plugin</artifactId>
+                <manifest>
-				<executions>
+                  <mainClass>com.iluwatar.information.microservices.InformationApplication</mainClass>
-					<execution>
+                </manifest>
-						<configuration>
+              </archive>
-							<archive>
+            </configuration>
-								<manifest>
+          </execution>
-									<mainClass>com.iluwatar.information.microservices.InformationApplication</mainClass>
+        </executions>
-								</manifest>
+      </plugin>
-							</archive>
+    </plugins>
-						</configuration>
+  </build>
-					</execution>
-				</executions>
-			</plugin>
-		</plugins>
-	</build>
 </project>

aggregator-microservices/inventory-microservice/pom.xml

@@ -23,62 +23,58 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  <parent>
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <artifactId>aggregator-microservices</artifactId>
-	<parent>
+    <groupId>com.iluwatar</groupId>
-		<artifactId>aggregator-microservices</artifactId>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<version>1.25.0-SNAPSHOT</version>
+  <modelVersion>4.0.0</modelVersion>
-	</parent>
+  <artifactId>inventory-microservice</artifactId>
-	<modelVersion>4.0.0</modelVersion>
+  <packaging>jar</packaging>
-	<artifactId>inventory-microservice</artifactId>
+  <dependencies>
-
+    <dependency>
-	<packaging>jar</packaging>
+      <groupId>org.springframework</groupId>
-	<dependencies>
+      <artifactId>spring-webmvc</artifactId>
-		<dependency>
+    </dependency>
-			<groupId>org.springframework</groupId>
+    <dependency>
-			<artifactId>spring-webmvc</artifactId>
+      <groupId>org.springframework.boot</groupId>
-		</dependency>
+      <artifactId>spring-boot-starter-web</artifactId>
-		<dependency>
+    </dependency>
-			<groupId>org.springframework.boot</groupId>
+    <dependency>
-			<artifactId>spring-boot-starter-web</artifactId>
+      <groupId>org.junit.jupiter</groupId>
-		</dependency>
+      <artifactId>junit-jupiter-engine</artifactId>
-		<dependency>
+      <scope>test</scope>
-			<groupId>org.junit.jupiter</groupId>
+    </dependency>
-			<artifactId>junit-jupiter-engine</artifactId>
+  </dependencies>
-			<scope>test</scope>
+  <build>
-		</dependency>
+    <plugins>
-	</dependencies>
+      <plugin>
-
+        <groupId>org.springframework.boot</groupId>
-	<build>
+        <artifactId>spring-boot-maven-plugin</artifactId>
-		<plugins>
+        <executions>
-			<plugin>
+          <execution>
-				<groupId>org.springframework.boot</groupId>
+            <goals>
-				<artifactId>spring-boot-maven-plugin</artifactId>
+              <goal>repackage</goal>
-				<executions>
+            </goals>
-					<execution>
+          </execution>
-						<goals>
+        </executions>
-							<goal>repackage</goal>
+      </plugin>
-						</goals>
+      <plugin>
-					</execution>
+        <groupId>org.apache.maven.plugins</groupId>
-				</executions>
+        <artifactId>maven-assembly-plugin</artifactId>
-			</plugin>
+        <executions>
-			<plugin>
+          <execution>
-				<groupId>org.apache.maven.plugins</groupId>
+            <configuration>
-				<artifactId>maven-assembly-plugin</artifactId>
+              <archive>
-				<executions>
+                <manifest>
-					<execution>
+                  <mainClass>com.iluwatar.inventory.microservices.InventoryApplication</mainClass>
-						<configuration>
+                </manifest>
-							<archive>
+              </archive>
-								<manifest>
+            </configuration>
-									<mainClass>com.iluwatar.inventory.microservices.InventoryApplication</mainClass>
+          </execution>
-								</manifest>
+        </executions>
-							</archive>
+      </plugin>
-						</configuration>
+    </plugins>
-					</execution>
+  </build>
-				</executions>
-			</plugin>
-		</plugins>
-	</build>
 </project>

aggregator-microservices/pom.xml

@@ -23,20 +23,18 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  <parent>
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <artifactId>java-design-patterns</artifactId>
-    <parent>
+    <groupId>com.iluwatar</groupId>
-        <artifactId>java-design-patterns</artifactId>
+    <version>1.26.0-SNAPSHOT</version>
-        <groupId>com.iluwatar</groupId>
+  </parent>
-        <version>1.25.0-SNAPSHOT</version>
+  <modelVersion>4.0.0</modelVersion>
-    </parent>
+  <artifactId>aggregator-microservices</artifactId>
-    <modelVersion>4.0.0</modelVersion>
+  <packaging>pom</packaging>
-    <artifactId>aggregator-microservices</artifactId>
+  <modules>
-    <packaging>pom</packaging>
+    <module>information-microservice</module>
-    <modules>
+    <module>aggregator-service</module>
-        <module>information-microservice</module>
+    <module>inventory-microservice</module>
-        <module>aggregator-service</module>
+  </modules>
-        <module>inventory-microservice</module>
-    </modules>
 </project>

ambassador/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Ambassador
-category: Structural
+folder: ambassador
+permalink: /patterns/ambassador/
+categories: Structural
 language: en
 tags:
   - Decoupling

ambassador/pom.xml

@@ -23,40 +23,38 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  <parent>
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <artifactId>java-design-patterns</artifactId>
-	<parent>
+    <groupId>com.iluwatar</groupId>
-		<artifactId>java-design-patterns</artifactId>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<version>1.25.0-SNAPSHOT</version>
+  <modelVersion>4.0.0</modelVersion>
-	</parent>
+  <artifactId>ambassador</artifactId>
-	<modelVersion>4.0.0</modelVersion>
+  <dependencies>
-	<artifactId>ambassador</artifactId>
+    <dependency>
-	<dependencies>
+      <groupId>org.junit.jupiter</groupId>
-		<dependency>
+      <artifactId>junit-jupiter-engine</artifactId>
-			<groupId>org.junit.jupiter</groupId>
+      <scope>test</scope>
-			<artifactId>junit-jupiter-engine</artifactId>
+    </dependency>
-			<scope>test</scope>
+  </dependencies>
-		</dependency>
+  <build>
-	</dependencies>
+    <plugins>
-	<build>
+      <plugin>
-		<plugins>
+        <groupId>org.apache.maven.plugins</groupId>
-			<plugin>
+        <artifactId>maven-assembly-plugin</artifactId>
-				<groupId>org.apache.maven.plugins</groupId>
+        <executions>
-				<artifactId>maven-assembly-plugin</artifactId>
+          <execution>
-				<executions>
+            <configuration>
-					<execution>
+              <archive>
-						<configuration>
+                <manifest>
-							<archive>
+                  <mainClass>com.iluwatar.ambassador.App</mainClass>
-								<manifest>
+                </manifest>
-									<mainClass>com.iluwatar.ambassador.App</mainClass>
+              </archive>
-								</manifest>
+            </configuration>
-							</archive>
+          </execution>
-						</configuration>
+        </executions>
-					</execution>
+      </plugin>
-				</executions>
+    </plugins>
-			</plugin>
+  </build>
-		</plugins>
-	</build>
 </project>

api-gateway/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: API Gateway
-category: Architectural
+folder: api-gateway
+permalink: /patterns/api-gateway/
+categories: Architectural
 language: en
 tags:
   - Cloud distributed

api-gateway/api-gateway-service/pom.xml

@@ -23,13 +23,11 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>api-gateway</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
   <artifactId>api-gateway-service</artifactId>
@@ -54,7 +52,6 @@
       <scope>test</scope>
     </dependency>
   </dependencies>
-
   <build>
     <plugins>
       <plugin>

api-gateway/image-microservice/pom.xml

@@ -23,13 +23,11 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>api-gateway</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
   <artifactId>image-microservice</artifactId>
@@ -49,7 +47,6 @@
       <scope>test</scope>
     </dependency>
   </dependencies>
-
   <build>
     <plugins>
       <plugin>

api-gateway/pom.xml

@@ -23,13 +23,11 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>java-design-patterns</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
   <artifactId>api-gateway</artifactId>

api-gateway/price-microservice/pom.xml

@@ -23,19 +23,15 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>api-gateway</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
-
   <modelVersion>4.0.0</modelVersion>
   <artifactId>price-microservice</artifactId>
   <packaging>jar</packaging>
-
   <dependencies>
     <dependency>
       <groupId>org.springframework</groupId>
@@ -51,7 +47,6 @@
       <scope>test</scope>
     </dependency>
   </dependencies>
-
   <build>
     <plugins>
       <plugin>

arrange-act-assert/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Arrange/Act/Assert
-category: Idiom
+folder: arrange-act-assert
+permalink: /patterns/arrange-act-assert/
+categories: Idiom
 language: en
 tags:
  - Testing

arrange-act-assert/pom.xml

@@ -23,16 +23,13 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>java-design-patterns</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
-
   <artifactId>arrange-act-assert</artifactId>
   <dependencies>
     <dependency>
@@ -41,4 +38,4 @@
       <scope>test</scope>
     </dependency>
   </dependencies>
-</project>
+</project>

async-method-invocation/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Async Method Invocation
-category: Concurrency
+folder: async-method-invocation
+permalink: /patterns/async-method-invocation/
+categories: Concurrency
 language: en
 tags:
  - Reactive

async-method-invocation/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,46 +23,43 @@
     THE SOFTWARE.
 
 -->
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+  <modelVersion>4.0.0</modelVersion>
-	xmlns="http://maven.apache.org/POM/4.0.0"
+  <parent>
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <groupId>com.iluwatar</groupId>
-	<modelVersion>4.0.0</modelVersion>
+    <artifactId>java-design-patterns</artifactId>
-	<parent>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<artifactId>java-design-patterns</artifactId>
+  <artifactId>async-method-invocation</artifactId>
-		<version>1.25.0-SNAPSHOT</version>
+  <dependencies>
-	</parent>
+    <dependency>
-	<artifactId>async-method-invocation</artifactId>
+      <groupId>org.junit.jupiter</groupId>
-	<dependencies>
+      <artifactId>junit-jupiter-engine</artifactId>
-		<dependency>
+      <scope>test</scope>
-			<groupId>org.junit.jupiter</groupId>
+    </dependency>
-			<artifactId>junit-jupiter-engine</artifactId>
+    <dependency>
-			<scope>test</scope>
+      <groupId>org.mockito</groupId>
-		</dependency>
+      <artifactId>mockito-core</artifactId>
-		<dependency>
+      <scope>test</scope>
-			<groupId>org.mockito</groupId>
+    </dependency>
-			<artifactId>mockito-core</artifactId>
+  </dependencies>
-			<scope>test</scope>
+  <build>
-		</dependency>
+    <plugins>
-	</dependencies>
+      <plugin>
-	<build>
+        <groupId>org.apache.maven.plugins</groupId>
-		<plugins>
+        <artifactId>maven-assembly-plugin</artifactId>
-			<plugin>
+        <executions>
-				<groupId>org.apache.maven.plugins</groupId>
+          <execution>
-				<artifactId>maven-assembly-plugin</artifactId>
+            <configuration>
-				<executions>
+              <archive>
-					<execution>
+                <manifest>
-						<configuration>
+                  <mainClass>com.iluwatar.async.method.invocation.App</mainClass>
-							<archive>
+                </manifest>
-								<manifest>
+              </archive>
-									<mainClass>com.iluwatar.async.method.invocation.App</mainClass>
+            </configuration>
-								</manifest>
+          </execution>
-							</archive>
+        </executions>
-						</configuration>
+      </plugin>
-					</execution>
+    </plugins>
-				</executions>
+  </build>
-			</plugin>
-		</plugins>
-	</build>
 </project>

async-method-invocation/src/main/java/com/iluwatar/async/method/invocation/App.java

@@ -59,9 +59,12 @@ import lombok.extern.slf4j.Slf4j;
 @Slf4j
 public class App {
 
+  private static final String ROCKET_LAUNCH_LOG_PATTERN = "Space rocket <%s> launched successfully";
+
   /**
    * Program entry point.
    */
+
   public static void main(String[] args) throws Exception {
     // construct a new executor that will run async tasks
     var executor = new ThreadAsyncExecutor();
@@ -87,9 +90,9 @@ public class App {
     asyncResult5.await();
 
     // log the results of the tasks, callbacks log immediately when complete
-    log("Space rocket <" + result1 + "> launch complete");
+    log(String.format(ROCKET_LAUNCH_LOG_PATTERN, result1));
-    log("Space rocket <" + result2 + "> launch complete");
+    log(String.format(ROCKET_LAUNCH_LOG_PATTERN, result2));
-    log("Space rocket <" + result3 + "> launch complete");
+    log(String.format(ROCKET_LAUNCH_LOG_PATTERN, result3));
   }
 
   /**
@@ -102,7 +105,7 @@ public class App {
   private static <T> Callable<T> lazyval(T value, long delayMillis) {
     return () -> {
       Thread.sleep(delayMillis);
-      log("Space rocket <" + value + "> launched successfully");
+      log(String.format(ROCKET_LAUNCH_LOG_PATTERN, value));
       return value;
     };
   }

balking/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Balking
-category: Concurrency
+folder: balking
+permalink: /patterns/balking/
+categories: Concurrency
 language: en
 tags:
  - Decoupling

balking/pom.xml

@@ -23,41 +23,38 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  <parent>
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <artifactId>java-design-patterns</artifactId>
-	<parent>
+    <groupId>com.iluwatar</groupId>
-		<artifactId>java-design-patterns</artifactId>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<version>1.25.0-SNAPSHOT</version>
+  <modelVersion>4.0.0</modelVersion>
-	</parent>
+  <artifactId>balking</artifactId>
-	<modelVersion>4.0.0</modelVersion>
+  <dependencies>
-
+    <dependency>
-	<artifactId>balking</artifactId>
+      <groupId>org.junit.jupiter</groupId>
-	<dependencies>
+      <artifactId>junit-jupiter-engine</artifactId>
-		<dependency>
+      <scope>test</scope>
-			<groupId>org.junit.jupiter</groupId>
+    </dependency>
-			<artifactId>junit-jupiter-engine</artifactId>
+  </dependencies>
-			<scope>test</scope>
+  <build>
-		</dependency>
+    <plugins>
-	</dependencies>
+      <plugin>
-	<build>
+        <groupId>org.apache.maven.plugins</groupId>
-		<plugins>
+        <artifactId>maven-assembly-plugin</artifactId>
-			<plugin>
+        <executions>
-				<groupId>org.apache.maven.plugins</groupId>
+          <execution>
-				<artifactId>maven-assembly-plugin</artifactId>
+            <configuration>
-				<executions>
+              <archive>
-					<execution>
+                <manifest>
-						<configuration>
+                  <mainClass>com.iluwatar.balking.App</mainClass>
-							<archive>
+                </manifest>
-								<manifest>
+              </archive>
-									<mainClass>com.iluwatar.balking.App</mainClass>
+            </configuration>
-								</manifest>
+          </execution>
-							</archive>
+        </executions>
-						</configuration>
+      </plugin>
-					</execution>
+    </plugins>
-				</executions>
+  </build>
-			</plugin>
-		</plugins>
-	</build>
 </project>

bridge/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Bridge
-category: Structural
+folder: bridge
+permalink: /patterns/bridge/
+categories: Structural
 language: en
 tags:
  - Gang of Four

bridge/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,30 +23,27 @@
     THE SOFTWARE.
 
 -->
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+  <modelVersion>4.0.0</modelVersion>
-	xmlns="http://maven.apache.org/POM/4.0.0"
+  <parent>
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <groupId>com.iluwatar</groupId>
-	<modelVersion>4.0.0</modelVersion>
+    <artifactId>java-design-patterns</artifactId>
-	<parent>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<artifactId>java-design-patterns</artifactId>
+  <artifactId>bridge</artifactId>
-		<version>1.25.0-SNAPSHOT</version>
+  <dependencies>
-	</parent>
+    <dependency>
-	<artifactId>bridge</artifactId>
+      <groupId>org.junit.jupiter</groupId>
-	<dependencies>
+      <artifactId>junit-jupiter-engine</artifactId>
-		<dependency>
+      <scope>test</scope>
-			<groupId>org.junit.jupiter</groupId>
+    </dependency>
-			<artifactId>junit-jupiter-engine</artifactId>
+    <dependency>
-			<scope>test</scope>
+      <groupId>org.mockito</groupId>
-		</dependency>
+      <artifactId>mockito-core</artifactId>
-		<dependency>
+      <scope>test</scope>
-			<groupId>org.mockito</groupId>
+    </dependency>
-			<artifactId>mockito-core</artifactId>
+  </dependencies>
-			<scope>test</scope>
+  <build>
-		</dependency>
-	</dependencies>
-	<build>
     <plugins>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>

builder/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Builder
-category: Creational
+folder: builder
+permalink: /patterns/builder/
+categories: Creational
 language: en
 tags:
  - Gang of Four
@@ -131,6 +134,12 @@ Use the Builder pattern when
 * The algorithm for creating a complex object should be independent of the parts that make up the object and how they're assembled
 * The construction process must allow different representations for the object that's constructed
 
+## Tutorials
+
+* [Refactoring Guru](https://refactoring.guru/design-patterns/builder)
+* [Oracle Blog](https://blogs.oracle.com/javamagazine/post/exploring-joshua-blochs-builder-design-pattern-in-java)
+* [Journal Dev](https://www.journaldev.com/1425/builder-design-pattern-in-java)
+
 ## Known uses
 
 * [java.lang.StringBuilder](http://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html)

builder/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,25 +23,22 @@
     THE SOFTWARE.
 
 -->
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+  <modelVersion>4.0.0</modelVersion>
-	xmlns="http://maven.apache.org/POM/4.0.0"
+  <parent>
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <groupId>com.iluwatar</groupId>
-	<modelVersion>4.0.0</modelVersion>
+    <artifactId>java-design-patterns</artifactId>
-	<parent>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<artifactId>java-design-patterns</artifactId>
+  <artifactId>builder</artifactId>
-		<version>1.25.0-SNAPSHOT</version>
+  <dependencies>
-	</parent>
+    <dependency>
-	<artifactId>builder</artifactId>
+      <groupId>org.junit.jupiter</groupId>
-	<dependencies>
+      <artifactId>junit-jupiter-engine</artifactId>
-		<dependency>
+      <scope>test</scope>
-			<groupId>org.junit.jupiter</groupId>
+    </dependency>
-			<artifactId>junit-jupiter-engine</artifactId>
+  </dependencies>
-			<scope>test</scope>
+  <build>
-		</dependency>
-	</dependencies>
-	<build>
     <plugins>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>

business-delegate/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Business Delegate
-category: Structural
+folder: business-delegate
+permalink: /patterns/business-delegate/
+categories: Structural
 language: en
 tags:
  - Decoupling

business-delegate/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,46 +23,43 @@
     THE SOFTWARE.
 
 -->
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+  <modelVersion>4.0.0</modelVersion>
-	xmlns="http://maven.apache.org/POM/4.0.0"
+  <parent>
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+    <groupId>com.iluwatar</groupId>
-	<modelVersion>4.0.0</modelVersion>
+    <artifactId>java-design-patterns</artifactId>
-	<parent>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<artifactId>java-design-patterns</artifactId>
+  <artifactId>business-delegate</artifactId>
-		<version>1.25.0-SNAPSHOT</version>
+  <dependencies>
-	</parent>
+    <dependency>
-	<artifactId>business-delegate</artifactId>
+      <groupId>org.junit.jupiter</groupId>
-	<dependencies>
+      <artifactId>junit-jupiter-engine</artifactId>
-		<dependency>
+      <scope>test</scope>
-			<groupId>org.junit.jupiter</groupId>
+    </dependency>
-			<artifactId>junit-jupiter-engine</artifactId>
+    <dependency>
-			<scope>test</scope>
+      <groupId>org.mockito</groupId>
-		</dependency>
+      <artifactId>mockito-core</artifactId>
-		<dependency>
+      <scope>test</scope>
-			<groupId>org.mockito</groupId>
+    </dependency>
-			<artifactId>mockito-core</artifactId>
+  </dependencies>
-			<scope>test</scope>
+  <build>
-		</dependency>
+    <plugins>
-	</dependencies>
+      <plugin>
-	<build>
+        <groupId>org.apache.maven.plugins</groupId>
-		<plugins>
+        <artifactId>maven-assembly-plugin</artifactId>
-			<plugin>
+        <executions>
-				<groupId>org.apache.maven.plugins</groupId>
+          <execution>
-				<artifactId>maven-assembly-plugin</artifactId>
+            <configuration>
-				<executions>
+              <archive>
-					<execution>
+                <manifest>
-						<configuration>
+                  <mainClass>com.iluwatar.business.delegate.App</mainClass>
-							<archive>
+                </manifest>
-								<manifest>
+              </archive>
-									<mainClass>com.iluwatar.business.delegate.App</mainClass>
+            </configuration>
-								</manifest>
+          </execution>
-							</archive>
+        </executions>
-						</configuration>
+      </plugin>
-					</execution>
+    </plugins>
-				</executions>
+  </build>
-			</plugin>
-		</plugins>
-	</build>
 </project>

bytecode/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Bytecode
-category: Behavioral
+folder: bytecode
+permalink: /patterns/bytecode/
+categories: Behavioral
 language: en
 tags:
  - Game programming

bytecode/pom.xml

@@ -23,43 +23,38 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  <parent>
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <artifactId>java-design-patterns</artifactId>
-	<parent>
+    <groupId>com.iluwatar</groupId>
-		<artifactId>java-design-patterns</artifactId>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<version>1.25.0-SNAPSHOT</version>
+  <modelVersion>4.0.0</modelVersion>
-	</parent>
+  <artifactId>bytecode</artifactId>
-	<modelVersion>4.0.0</modelVersion>
+  <dependencies>
-
+    <dependency>
-	<artifactId>bytecode</artifactId>
+      <groupId>org.junit.jupiter</groupId>
-	<dependencies>
+      <artifactId>junit-jupiter-engine</artifactId>
-		<dependency>
+      <scope>test</scope>
-			<groupId>org.junit.jupiter</groupId>
+    </dependency>
-			<artifactId>junit-jupiter-engine</artifactId>
+  </dependencies>
-			<scope>test</scope>
+  <build>
-		</dependency>
+    <plugins>
-	</dependencies>
+      <plugin>
-
+        <groupId>org.apache.maven.plugins</groupId>
-	<build>
+        <artifactId>maven-assembly-plugin</artifactId>
-		<plugins>
+        <executions>
-			<plugin>
+          <execution>
-				<groupId>org.apache.maven.plugins</groupId>
+            <configuration>
-				<artifactId>maven-assembly-plugin</artifactId>
+              <archive>
-				<executions>
+                <manifest>
-					<execution>
+                  <mainClass>com.iluwatar.bytecode.App</mainClass>
-						<configuration>
+                </manifest>
-							<archive>
+              </archive>
-								<manifest>
+            </configuration>
-									<mainClass>com.iluwatar.bytecode.App</mainClass>
+          </execution>
-								</manifest>
+        </executions>
-							</archive>
+      </plugin>
-						</configuration>
+    </plugins>
-					</execution>
+  </build>
-				</executions>
+</project>
-			</plugin>
-		</plugins>
-	</build>
-
-</project>

bytecode/src/main/java/com/iluwatar/bytecode/App.java

@@ -42,6 +42,14 @@ import lombok.extern.slf4j.Slf4j;
 @Slf4j
 public class App {
 
+  private static final String LITERAL_0 = "LITERAL 0";
+  private static final String HEALTH_PATTERN = "%s_HEALTH";
+  private static final String GET_AGILITY = "GET_AGILITY";
+  private static final String GET_WISDOM = "GET_WISDOM";
+  private static final String ADD = "ADD";
+  private static final String LITERAL_2 = "LITERAL 2";
+  private static final String DIVIDE = "DIVIDE";
+
   /**
    * Main app method.
    *
@@ -53,17 +61,17 @@ public class App {
         new Wizard(45, 7, 11, 0, 0),
         new Wizard(36, 18, 8, 0, 0));
 
-    vm.execute(InstructionConverterUtil.convertToByteCode("LITERAL 0"));
+    vm.execute(InstructionConverterUtil.convertToByteCode(LITERAL_0));
-    vm.execute(InstructionConverterUtil.convertToByteCode("LITERAL 0"));
+    vm.execute(InstructionConverterUtil.convertToByteCode(LITERAL_0));
-    vm.execute(InstructionConverterUtil.convertToByteCode("GET_HEALTH"));
+    vm.execute(InstructionConverterUtil.convertToByteCode(String.format(HEALTH_PATTERN, "GET")));
-    vm.execute(InstructionConverterUtil.convertToByteCode("LITERAL 0"));
+    vm.execute(InstructionConverterUtil.convertToByteCode(LITERAL_0));
-    vm.execute(InstructionConverterUtil.convertToByteCode("GET_AGILITY"));
+    vm.execute(InstructionConverterUtil.convertToByteCode(GET_AGILITY));
-    vm.execute(InstructionConverterUtil.convertToByteCode("LITERAL 0"));
+    vm.execute(InstructionConverterUtil.convertToByteCode(LITERAL_0));
-    vm.execute(InstructionConverterUtil.convertToByteCode("GET_WISDOM"));
+    vm.execute(InstructionConverterUtil.convertToByteCode(GET_WISDOM));
-    vm.execute(InstructionConverterUtil.convertToByteCode("ADD"));
+    vm.execute(InstructionConverterUtil.convertToByteCode(ADD));
-    vm.execute(InstructionConverterUtil.convertToByteCode("LITERAL 2"));
+    vm.execute(InstructionConverterUtil.convertToByteCode(LITERAL_2));
-    vm.execute(InstructionConverterUtil.convertToByteCode("DIVIDE"));
+    vm.execute(InstructionConverterUtil.convertToByteCode(DIVIDE));
-    vm.execute(InstructionConverterUtil.convertToByteCode("ADD"));
+    vm.execute(InstructionConverterUtil.convertToByteCode(ADD));
-    vm.execute(InstructionConverterUtil.convertToByteCode("SET_HEALTH"));
+    vm.execute(InstructionConverterUtil.convertToByteCode(String.format(HEALTH_PATTERN, "SET")));
   }
 }

caching/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Caching
-category: Behavioral
+folder: caching
+permalink: /patterns/caching/
+categories: Behavioral
 language: en
 tags:
   - Performance

caching/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,13 +23,12 @@
     THE SOFTWARE.
 
 -->
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <artifactId>caching</artifactId>
   <dependencies>
@@ -38,12 +37,6 @@
       <artifactId>junit-jupiter-engine</artifactId>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>org.mockito</groupId>
-      <artifactId>mockito-junit-jupiter</artifactId>
-      <version>3.12.4</version>
-      <scope>test</scope>
-    </dependency>
     <dependency>
       <groupId>org.mockito</groupId>
       <artifactId>mockito-all</artifactId>
@@ -53,7 +46,6 @@
     <dependency>
       <groupId>org.mongodb</groupId>
       <artifactId>mongo-java-driver</artifactId>
-      <version>3.4.1</version>
     </dependency>
   </dependencies>
   <!--

caching/src/test/java/com/iluwatar/caching/database/MongoDbTest.java

@@ -16,7 +16,6 @@ import static com.iluwatar.caching.constants.CachingConstants.USER_ID;
 import static com.iluwatar.caching.constants.CachingConstants.USER_NAME;
 import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
 import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.*;
 
 class MongoDbTest {

callback/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Callback
-category: Idiom
+folder: callback
+permalink: /patterns/callback/
+categories: Idiom
 language: en
 tags:
  - Reactive

callback/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,13 +23,12 @@
     THE SOFTWARE.
 
 -->
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <artifactId>callback</artifactId>
   <dependencies>

chain-of-responsibility/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Chain of responsibility
-category: Behavioral
+folder: chain-of-responsibility
+permalink: /patterns/chain-of-responsibility/
+categories: Behavioral
 language: en
 tags:
  - Gang of Four

chain-of-responsibility/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,13 +23,12 @@
     THE SOFTWARE.
 
 -->
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <artifactId>chain-of-responsibility</artifactId>
   <dependencies>

checkstyle-suppressions.xml

@@ -23,11 +23,10 @@
     THE SOFTWARE.
 
 -->
-<!DOCTYPE suppressions PUBLIC "-//Puppy Crawl//DTD Suppressions 1.1//EN"
+<!DOCTYPE suppressions PUBLIC "-//Puppy Crawl//DTD Suppressions 1.1//EN" "http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
-    "http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
 <suppressions>
-   <suppress checks="AvoidStarImport" files="[\\/]src[\\/]test[\\/]java[\\/]"/>
+  <suppress checks="AvoidStarImport" files="[\\/]src[\\/]test[\\/]java[\\/]" />
-   <suppress checks="[a-zA-Z0-9]*" files="[\\/]src[\\/]test[\\/]resources[\\/]"/>
+  <suppress checks="[a-zA-Z0-9]*" files="[\\/]src[\\/]test[\\/]resources[\\/]" />
-   <suppress checks="[a-zA-Z0-9]*" files="[\\/]build[\\/]generated-sources[\\/]"/>
+  <suppress checks="[a-zA-Z0-9]*" files="[\\/]build[\\/]generated-sources[\\/]" />
-   <suppress checks="[a-zA-Z0-9]*" files="[\\/]src[\\/]main[\\/]resources[\\/]"/>
+  <suppress checks="[a-zA-Z0-9]*" files="[\\/]src[\\/]main[\\/]resources[\\/]" />
 </suppressions>

circuit-breaker/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Circuit Breaker
-category: Behavioral
+folder: circuit-breaker
+permalink: /patterns/circuit-breaker/
+categories: Behavioral
 language: en
 tags:
   - Performance

circuit-breaker/pom.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,21 +24,21 @@
 
 -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
+  <modelVersion>4.0.0</modelVersion>
-    <parent>
+  <parent>
-        <groupId>com.iluwatar</groupId>
+    <groupId>com.iluwatar</groupId>
-        <artifactId>java-design-patterns</artifactId>
+    <artifactId>java-design-patterns</artifactId>
-        <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
-    </parent>
+  </parent>
-    <artifactId>circuit-breaker</artifactId>
+  <artifactId>circuit-breaker</artifactId>
-    <dependencies>
+  <dependencies>
-        <dependency>
+    <dependency>
-            <groupId>org.junit.jupiter</groupId>
+      <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-engine</artifactId>
+      <artifactId>junit-jupiter-engine</artifactId>
-            <scope>test</scope>
+      <scope>test</scope>
-        </dependency>
+    </dependency>
-    </dependencies>
+  </dependencies>
-    <build>
+  <build>
     <plugins>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>

cloud-static-content-hosting/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Static Content Hosting
-category: Cloud
+folder: cloud-static-content-hosting
+permalink: /patterns/cloud-static-content-hosting/
+categories: Cloud
 language: en
 tags:
 - Cloud distributed

collection-pipeline/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Collection Pipeline
-category: Functional
+folder: collection-pipeline
+permalink: /patterns/collection-pipeline/
+categories: Functional
 language: en
 tags:
  - Reactive

collection-pipeline/pom.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -27,7 +28,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <artifactId>collection-pipeline</artifactId>
   <dependencies>

combinator/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Combinator
-category: Idiom
+folder: combinator
+permalink: /patterns/combinator/
+categories: Idiom
 language: en
 tags:
  - Reactive

combinator/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,15 +23,13 @@
     THE SOFTWARE.
 
 -->
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
-
   <artifactId>combinator</artifactId>
   <dependencies>
     <dependency>
@@ -40,5 +38,4 @@
       <scope>test</scope>
     </dependency>
   </dependencies>
-
 </project>

command/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Command
-category: Behavioral
+folder: command
+permalink: /patterns/command/
+categories: Behavioral
 language: en
 tags:
  - Gang of Four

command/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,13 +23,12 @@
     THE SOFTWARE.
 
 -->
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <artifactId>command</artifactId>
   <dependencies>

commander/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Commander
-category: Concurrency
+folder: commander
+permalink: /patterns/commander/
+categories: Concurrency
 language: en
 tags:
  - Cloud distributed

commander/pom.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -27,7 +28,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <artifactId>commander</artifactId>
   <dependencies>
@@ -55,7 +56,7 @@
             </configuration>
           </execution>
           <execution>
-          <id>Message</id>
+            <id>Message</id>
             <configuration>
               <archive>
                 <manifest>

composite-entity/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Composite Entity
-category: Structural
+folder: composite-entity
+permalink: /patterns/composite-entity/
+categories: Structural
 language: en
 tags:
  - Enterprise Integration Pattern

composite-entity/pom.xml

@@ -23,41 +23,38 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  <parent>
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <artifactId>java-design-patterns</artifactId>
-    <parent>
+    <groupId>com.iluwatar</groupId>
-        <artifactId>java-design-patterns</artifactId>
+    <version>1.26.0-SNAPSHOT</version>
-        <groupId>com.iluwatar</groupId>
+  </parent>
-        <version>1.25.0-SNAPSHOT</version>
+  <modelVersion>4.0.0</modelVersion>
-    </parent>
+  <artifactId>composite-entity</artifactId>
-    <modelVersion>4.0.0</modelVersion>
+  <dependencies>
-    <artifactId>composite-entity</artifactId>
+    <dependency>
-    <dependencies>
+      <groupId>org.junit.jupiter</groupId>
-        <dependency>
+      <artifactId>junit-jupiter-engine</artifactId>
-            <groupId>org.junit.jupiter</groupId>
+      <scope>test</scope>
-            <artifactId>junit-jupiter-engine</artifactId>
+    </dependency>
-            <scope>test</scope>
+  </dependencies>
-        </dependency>
+  <build>
-    </dependencies>
+    <plugins>
-    <build>
+      <plugin>
-        <plugins>
+        <groupId>org.apache.maven.plugins</groupId>
-            <plugin>
+        <artifactId>maven-assembly-plugin</artifactId>
-                <groupId>org.apache.maven.plugins</groupId>
+        <executions>
-                <artifactId>maven-assembly-plugin</artifactId>
+          <execution>
-                <executions>
+            <configuration>
-                    <execution>
+              <archive>
-                        <configuration>
+                <manifest>
-                            <archive>
+                  <mainClass>com.iluwatar.composite-entity.com.iluwatar.compositeentity.App</mainClass>
-                                <manifest>
+                </manifest>
-                                    <mainClass>com.iluwatar.composite-entity.com.iluwatar.compositeentity.App</mainClass>
+              </archive>
-                                </manifest>
+            </configuration>
-                            </archive>
+          </execution>
-                        </configuration>
+        </executions>
-                    </execution>
+      </plugin>
-                </executions>
+    </plugins>
-            </plugin>
+  </build>
-        </plugins>
+</project>
-    </build>
-
-</project>

composite/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Composite
-category: Structural
+folder: composite
+permalink: /patterns/composite/
+categories: Structural
 language: en
 tags:
  - Gang of Four

composite/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,13 +23,12 @@
     THE SOFTWARE.
 
 -->
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <artifactId>composite</artifactId>
   <dependencies>

converter/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Converter
-category: Creational
+folder: converter
+permalink: /patterns/converter/
+categories: Creational
 language: en
 tags:
  - Decoupling

converter/pom.xml

@@ -23,28 +23,26 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  <parent>
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <artifactId>java-design-patterns</artifactId>
-	<parent>
+    <groupId>com.iluwatar</groupId>
-		<artifactId>java-design-patterns</artifactId>
+    <version>1.26.0-SNAPSHOT</version>
-		<groupId>com.iluwatar</groupId>
+  </parent>
-		<version>1.25.0-SNAPSHOT</version>
+  <artifactId>converter</artifactId>
-	</parent>
+  <modelVersion>4.0.0</modelVersion>
-	<artifactId>converter</artifactId>
+  <dependencies>
-	<modelVersion>4.0.0</modelVersion>
+    <dependency>
-	<dependencies>
+      <groupId>org.junit.jupiter</groupId>
-		<dependency>
+      <artifactId>junit-jupiter-engine</artifactId>
-			<groupId>org.junit.jupiter</groupId>
+      <scope>test</scope>
-			<artifactId>junit-jupiter-engine</artifactId>
+    </dependency>
-			<scope>test</scope>
+    <dependency>
-		</dependency>
+      <groupId>com.google.guava</groupId>
-		<dependency>
+      <artifactId>guava</artifactId>
-			<groupId>com.google.guava</groupId>
+    </dependency>
-			<artifactId>guava</artifactId>
+  </dependencies>
-		</dependency>
+  <build>
-	</dependencies>
-	<build>
     <plugins>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
@@ -63,5 +61,4 @@
       </plugin>
     </plugins>
   </build>
-
 </project>

cqrs/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: CQRS
-category: Architectural
+folder: cqrs
+permalink: /patterns/cqrs/
+categories: Architectural
 language: en
 tags:
   - Performance

cqrs/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,43 +23,41 @@
     THE SOFTWARE.
 
 -->
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+  <modelVersion>4.0.0</modelVersion>
-	xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+  <parent>
-	<modelVersion>4.0.0</modelVersion>
+    <groupId>com.iluwatar</groupId>
-	<parent>
+    <artifactId>java-design-patterns</artifactId>
-		<groupId>com.iluwatar</groupId>
+    <version>1.26.0-SNAPSHOT</version>
-		<artifactId>java-design-patterns</artifactId>
+  </parent>
-		<version>1.25.0-SNAPSHOT</version>
+  <artifactId>cqrs</artifactId>
-	</parent>
+  <dependencies>
-	<artifactId>cqrs</artifactId>
+    <dependency>
-	<dependencies>
+      <groupId>org.junit.jupiter</groupId>
-		<dependency>
+      <artifactId>junit-jupiter-engine</artifactId>
-			<groupId>org.junit.jupiter</groupId>
+      <scope>test</scope>
-			<artifactId>junit-jupiter-engine</artifactId>
+    </dependency>
-			<scope>test</scope>
+    <dependency>
-		</dependency>
+      <groupId>com.h2database</groupId>
-		<dependency>
+      <artifactId>h2</artifactId>
-			<groupId>com.h2database</groupId>
+    </dependency>
-			<artifactId>h2</artifactId>
+    <dependency>
-		</dependency>
+      <groupId>org.hibernate</groupId>
-		<dependency>
+      <artifactId>hibernate-core</artifactId>
-			<groupId>org.hibernate</groupId>
+    </dependency>
-			<artifactId>hibernate-core</artifactId>
+    <dependency>
-		</dependency>
+      <groupId>com.sun.xml.bind</groupId>
-		<dependency>
+      <artifactId>jaxb-impl</artifactId>
-			<groupId>com.sun.xml.bind</groupId>
+      <version>2.1.17</version>
-			<artifactId>jaxb-impl</artifactId>
+      <scope>test</scope>
-			<version>2.1.17</version>
+    </dependency>
-			<scope>test</scope>
+    <dependency>
-		</dependency>
+      <groupId>javax.xml.bind</groupId>
-		<dependency>
+      <artifactId>jaxb-api</artifactId>
-			<groupId>javax.xml.bind</groupId>
+      <scope>test</scope>
-			<artifactId>jaxb-api</artifactId>
+    </dependency>
-			<scope>test</scope>
+  </dependencies>
-		</dependency>
+  <build>
-	</dependencies>
-	<build>
     <plugins>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
@@ -78,5 +76,4 @@
       </plugin>
     </plugins>
   </build>
-
 </project>

cqrs/src/main/resources/hibernate.cfg.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,17 +23,15 @@
     THE SOFTWARE.
 
 -->
-<!DOCTYPE hibernate-configuration SYSTEM
+<!DOCTYPE hibernate-configuration SYSTEM "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
-"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
-
 <hibernate-configuration>
-    <session-factory>
+  <session-factory>
-        <property name="dialect">org.hibernate.dialect.H2Dialect</property>
+    <property name="dialect">org.hibernate.dialect.H2Dialect</property>
-        <property name="connection.driver_class">org.h2.Driver</property>
+    <property name="connection.driver_class">org.h2.Driver</property>
-        <property name="connection.url">jdbc:h2:mem:test</property>
+    <property name="connection.url">jdbc:h2:mem:test</property>
-        <property name="connection.username">sa</property>
+    <property name="connection.username">sa</property>
-        <property name="hbm2ddl.auto">create</property>
+    <property name="hbm2ddl.auto">create</property>
-        <mapping class="com.iluwatar.cqrs.domain.model.Author" />
+    <mapping class="com.iluwatar.cqrs.domain.model.Author" />
-        <mapping class="com.iluwatar.cqrs.domain.model.Book" />
+    <mapping class="com.iluwatar.cqrs.domain.model.Book" />
-    </session-factory>
+  </session-factory>
-</hibernate-configuration>
+</hibernate-configuration>

cqrs/src/main/resources/logback.xml

@@ -24,14 +24,12 @@
 
 -->
 <configuration>
-    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
-        <encoder>
+    <encoder>
-            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
-            </pattern>
+    </encoder>
-        </encoder>
+  </appender>
-    </appender>
+  <root level="info">
-
+    <appender-ref ref="STDOUT" />
-    <root level="info">
+  </root>
-        <appender-ref ref="STDOUT" />
-    </root>
 </configuration>

cqrs/src/test/resources/hibernate.cfg.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,17 +23,15 @@
     THE SOFTWARE.
 
 -->
-<!DOCTYPE hibernate-configuration SYSTEM
+<!DOCTYPE hibernate-configuration SYSTEM "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
-"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
-
 <hibernate-configuration>
-    <session-factory>
+  <session-factory>
-        <property name="dialect">org.hibernate.dialect.H2Dialect</property>
+    <property name="dialect">org.hibernate.dialect.H2Dialect</property>
-        <property name="connection.driver_class">org.h2.Driver</property>
+    <property name="connection.driver_class">org.h2.Driver</property>
-        <property name="connection.url">jdbc:h2:mem:test</property>
+    <property name="connection.url">jdbc:h2:mem:test</property>
-        <property name="connection.username">sa</property>
+    <property name="connection.username">sa</property>
-        <property name="hbm2ddl.auto">create</property>
+    <property name="hbm2ddl.auto">create</property>
-        <mapping class="com.iluwatar.cqrs.domain.model.Author" />
+    <mapping class="com.iluwatar.cqrs.domain.model.Author" />
-        <mapping class="com.iluwatar.cqrs.domain.model.Book" />
+    <mapping class="com.iluwatar.cqrs.domain.model.Book" />
-    </session-factory>
+  </session-factory>
-</hibernate-configuration>
+</hibernate-configuration>

cqrs/src/test/resources/logback.xml

@@ -24,14 +24,12 @@
 
 -->
 <configuration>
-    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
-        <encoder>
+    <encoder>
-            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
-            </pattern>
+    </encoder>
-        </encoder>
+  </appender>
-    </appender>
+  <root level="info">
-
+    <appender-ref ref="STDOUT" />
-    <root level="info">
+  </root>
-        <appender-ref ref="STDOUT" />
-    </root>
 </configuration>

dao/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Data Access Object
-category: Architectural
+folder: dao
+permalink: /patterns/dao/
+categories: Architectural
 language: en
 tags:
  - Data access

dao/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,17 +23,14 @@
     THE SOFTWARE.
 
 -->
-<project
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
-    xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <artifactId>dao</artifactId>
-
   <dependencies>
     <dependency>
       <groupId>org.junit.jupiter</groupId>

data-bus/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Data Bus
-category: Architectural
+folder: data-bus
+permalink: /patterns/data-bus/
+categories: Architectural
 language: en
 tags:
  - Decoupling

data-bus/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,45 +23,43 @@
     THE SOFTWARE.
 
 -->
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-         xmlns="http://maven.apache.org/POM/4.0.0"
+  <modelVersion>4.0.0</modelVersion>
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+  <parent>
-    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.iluwatar</groupId>
-    <parent>
+    <artifactId>java-design-patterns</artifactId>
-        <groupId>com.iluwatar</groupId>
+    <version>1.26.0-SNAPSHOT</version>
-        <artifactId>java-design-patterns</artifactId>
+  </parent>
-        <version>1.25.0-SNAPSHOT</version>
+  <artifactId>data-bus</artifactId>
-    </parent>
+  <dependencies>
-    <artifactId>data-bus</artifactId>
+    <dependency>
-    <dependencies>
+      <groupId>org.junit.jupiter</groupId>
-        <dependency>
+      <artifactId>junit-jupiter-engine</artifactId>
-            <groupId>org.junit.jupiter</groupId>
+      <scope>test</scope>
-            <artifactId>junit-jupiter-engine</artifactId>
+    </dependency>
-            <scope>test</scope>
+    <dependency>
-        </dependency>
+      <groupId>org.mockito</groupId>
-        <dependency>
+      <artifactId>mockito-core</artifactId>
-            <groupId>org.mockito</groupId>
+      <scope>test</scope>
-            <artifactId>mockito-core</artifactId>
+    </dependency>
-            <scope>test</scope>
+  </dependencies>
-        </dependency>
+  <build>
-    </dependencies>
+    <plugins>
-    <build>
+      <plugin>
-        <plugins>
+        <groupId>org.apache.maven.plugins</groupId>
-            <plugin>
+        <artifactId>maven-assembly-plugin</artifactId>
-                <groupId>org.apache.maven.plugins</groupId>
+        <executions>
-                <artifactId>maven-assembly-plugin</artifactId>
+          <execution>
-                <executions>
+            <configuration>
-                    <execution>
+              <archive>
-                        <configuration>
+                <manifest>
-                            <archive>
+                  <mainClass>com.iluwatar.databus.App</mainClass>
-                                <manifest>
+                </manifest>
-                                    <mainClass>com.iluwatar.databus.App</mainClass>
+              </archive>
-                                </manifest>
+            </configuration>
-                            </archive>
+          </execution>
-                        </configuration>
+        </executions>
-                    </execution>
+      </plugin>
-                </executions>
+    </plugins>
-            </plugin>
+  </build>
-        </plugins>
-    </build>
 </project>

data-locality/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Data Locality
-category: Behavioral
+folder: data-locality
+permalink: /patterns/data-locality/
+categories: Behavioral
 language: en
 tags:
  - Game programming

data-locality/pom.xml

@@ -23,17 +23,14 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <artifactId>data-locality</artifactId>
-
   <dependencies>
     <dependency>
       <groupId>org.junit.jupiter</groupId>
@@ -60,4 +57,4 @@
       </plugin>
     </plugins>
   </build>
-</project>
+</project>

data-mapper/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Data Mapper
-category: Architectural
+folder: data-mapper
+permalink: /patterns/data-mapper/
+categories: Architectural
 language: en
 tags:
  - Decoupling

data-mapper/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,38 +23,38 @@
     THE SOFTWARE.
 
 -->
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	<modelVersion>4.0.0</modelVersion>
+  <modelVersion>4.0.0</modelVersion>
-	<parent>
+  <parent>
-		<groupId>com.iluwatar</groupId>
+    <groupId>com.iluwatar</groupId>
-		<artifactId>java-design-patterns</artifactId>
+    <artifactId>java-design-patterns</artifactId>
-		<version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
-	</parent>
+  </parent>
-	<artifactId>data-mapper</artifactId>
+  <artifactId>data-mapper</artifactId>
-	<dependencies>
+  <dependencies>
-		<dependency>
+    <dependency>
-			<groupId>org.junit.jupiter</groupId>
+      <groupId>org.junit.jupiter</groupId>
-			<artifactId>junit-jupiter-engine</artifactId>
+      <artifactId>junit-jupiter-engine</artifactId>
-			<scope>test</scope>
+      <scope>test</scope>
-		</dependency>
+    </dependency>
-	</dependencies>
+  </dependencies>
-	<build>
+  <build>
-		<plugins>
+    <plugins>
-			<plugin>
+      <plugin>
-				<groupId>org.apache.maven.plugins</groupId>
+        <groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-assembly-plugin</artifactId>
+        <artifactId>maven-assembly-plugin</artifactId>
-				<executions>
+        <executions>
-					<execution>
+          <execution>
-						<configuration>
+            <configuration>
-							<archive>
+              <archive>
-								<manifest>
+                <manifest>
-									<mainClass>com.iluwatar.datamapper.App</mainClass>
+                  <mainClass>com.iluwatar.datamapper.App</mainClass>
-								</manifest>
+                </manifest>
-							</archive>
+              </archive>
-						</configuration>
+            </configuration>
-					</execution>
+          </execution>
-				</executions>
+        </executions>
-			</plugin>
+      </plugin>
-		</plugins>
+    </plugins>
-	</build>
+  </build>
 </project>

data-transfer-object/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Data Transfer Object
-category: Architectural
+folder: data-transfer-object
+permalink: /patterns/data-transfer-object/
+categories: Architectural
 language: en
 tags:
  - Performance

data-transfer-object/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,38 +23,38 @@
     THE SOFTWARE.
 
 -->
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
+  <modelVersion>4.0.0</modelVersion>
-    <parent>
+  <parent>
-        <groupId>com.iluwatar</groupId>
+    <groupId>com.iluwatar</groupId>
-        <artifactId>java-design-patterns</artifactId>
+    <artifactId>java-design-patterns</artifactId>
-        <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
-    </parent>
+  </parent>
-    <artifactId>data-transfer-object</artifactId>
+  <artifactId>data-transfer-object</artifactId>
-    <dependencies>
+  <dependencies>
-        <dependency>
+    <dependency>
-            <groupId>org.junit.jupiter</groupId>
+      <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-engine</artifactId>
+      <artifactId>junit-jupiter-engine</artifactId>
-            <scope>test</scope>
+      <scope>test</scope>
-        </dependency>
+    </dependency>
-    </dependencies>
+  </dependencies>
-    <build>
+  <build>
-        <plugins>
+    <plugins>
-            <plugin>
+      <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
+        <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-assembly-plugin</artifactId>
+        <artifactId>maven-assembly-plugin</artifactId>
-                <executions>
+        <executions>
-                    <execution>
+          <execution>
-                        <configuration>
+            <configuration>
-                            <archive>
+              <archive>
-                                <manifest>
+                <manifest>
-                                    <mainClass>com.iluwatar.datatransfer.App</mainClass>
+                  <mainClass>com.iluwatar.datatransfer.App</mainClass>
-                                </manifest>
+                </manifest>
-                            </archive>
+              </archive>
-                        </configuration>
+            </configuration>
-                    </execution>
+          </execution>
-                </executions>
+        </executions>
-            </plugin>
+      </plugin>
-        </plugins>
+    </plugins>
-    </build>
+  </build>
 </project>

decorator/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Decorator
-category: Structural
+folder: decorator
+permalink: /patterns/decorator/
+categories: Structural
 language: en
 tags:
  - Gang of Four

decorator/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,13 +23,12 @@
     THE SOFTWARE.
 
 -->
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <artifactId>decorator</artifactId>
   <dependencies>

delegation/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Delegation
-category: Structural
+folder: delegation
+permalink: /patterns/delegation/
+categories: Structural
 language: en
 tags:
  - Decoupling

delegation/pom.xml

@@ -23,18 +23,14 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>java-design-patterns</artifactId>
     <groupId>com.iluwatar</groupId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
-
   <artifactId>delegation</artifactId>
-
   <dependencies>
     <dependency>
       <groupId>org.junit.jupiter</groupId>

dependency-injection/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Dependency Injection
-category: Creational
+folder: dependency-injection
+permalink: /patterns/dependency-injection/
+categories: Creational
 language: en
 tags:
  - Decoupling

dependency-injection/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,13 +23,12 @@
     THE SOFTWARE.
 
 -->
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <artifactId>dependency-injection</artifactId>
   <dependencies>

dirty-flag/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Dirty Flag
-category: Behavioral
+folder: dirty-flag
+permalink: /patterns/dirty-flag/
+categories: Behavioral
 language: en
 tags:
  - Game programming

dirty-flag/pom.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,16 +23,15 @@
     THE SOFTWARE.
 
 -->
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <artifactId>dirty-flag</artifactId>
-  <version>1.25.0-SNAPSHOT</version>
+  <version>1.26.0-SNAPSHOT</version>
   <name>dirty-flag</name>
   <url>http://maven.apache.org</url>
   <properties>

domain-model/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Domain Model
-category: Architectural
+folder: domain-model
+permalink: /patterns/domain-model/
+categories: Architectural
 language: en
 tags:
  - Domain

domain-model/pom.xml

@@ -23,56 +23,51 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  <parent>
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <artifactId>java-design-patterns</artifactId>
-    <parent>
+    <groupId>com.iluwatar</groupId>
-        <artifactId>java-design-patterns</artifactId>
+    <version>1.26.0-SNAPSHOT</version>
-        <groupId>com.iluwatar</groupId>
+  </parent>
-        <version>1.25.0-SNAPSHOT</version>
+  <modelVersion>4.0.0</modelVersion>
-    </parent>
+  <artifactId>domain-model</artifactId>
-    <modelVersion>4.0.0</modelVersion>
+  <dependencies>
-
+    <dependency>
-    <artifactId>domain-model</artifactId>
+      <groupId>com.h2database</groupId>
-
+      <artifactId>h2</artifactId>
-    <dependencies>
+    </dependency>
-        <dependency>
+    <dependency>
-            <groupId>com.h2database</groupId>
+      <groupId>org.junit.jupiter</groupId>
-            <artifactId>h2</artifactId>
+      <artifactId>junit-jupiter-engine</artifactId>
-        </dependency>
+      <scope>test</scope>
-        <dependency>
+    </dependency>
-            <groupId>org.junit.jupiter</groupId>
+    <dependency>
-            <artifactId>junit-jupiter-engine</artifactId>
+      <groupId>org.mockito</groupId>
-            <scope>test</scope>
+      <artifactId>mockito-core</artifactId>
-        </dependency>
+    </dependency>
-        <dependency>
+    <dependency>
-            <groupId>org.mockito</groupId>
+      <groupId>org.joda</groupId>
-            <artifactId>mockito-core</artifactId>
+      <artifactId>joda-money</artifactId>
-        </dependency>
+      <version>1.0.1</version>
-        <dependency>
+    </dependency>
-            <groupId>org.joda</groupId>
+  </dependencies>
-            <artifactId>joda-money</artifactId>
+  <build>
-            <version>1.0.1</version>
+    <plugins>
-        </dependency>
+      <plugin>
-    </dependencies>
+        <groupId>org.apache.maven.plugins</groupId>
-    <build>
+        <artifactId>maven-assembly-plugin</artifactId>
-        <plugins>
+        <executions>
-            <plugin>
+          <execution>
-                <groupId>org.apache.maven.plugins</groupId>
+            <configuration>
-                <artifactId>maven-assembly-plugin</artifactId>
+              <archive>
-                <executions>
+                <manifest>
-                    <execution>
+                  <mainClass>com.iluwatar.domainmodel.App</mainClass>
-                        <configuration>
+                </manifest>
-                            <archive>
+              </archive>
-                                <manifest>
+            </configuration>
-                                    <mainClass>com.iluwatar.domainmodel.App</mainClass>
+          </execution>
-                                </manifest>
+        </executions>
-                            </archive>
+      </plugin>
-                        </configuration>
+    </plugins>
-                    </execution>
+  </build>
-                </executions>
+</project>
-            </plugin>
-        </plugins>
-    </build>
-
-</project>

double-buffer/README.md

@@ -1,6 +1,9 @@
 ---  
+layout: pattern  
 title: Double Buffer 
-category: Behavioral
+folder:  double-buffer  
+permalink: /patterns/double-buffer/  
+categories: Behavioral
 language: en
 tags:  
  - Performance

double-buffer/pom.xml

@@ -23,47 +23,42 @@
     THE SOFTWARE.
 
 -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  <parent>
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <artifactId>java-design-patterns</artifactId>
-    <parent>
+    <groupId>com.iluwatar</groupId>
-        <artifactId>java-design-patterns</artifactId>
+    <version>1.26.0-SNAPSHOT</version>
-        <groupId>com.iluwatar</groupId>
+  </parent>
-        <version>1.25.0-SNAPSHOT</version>
+  <modelVersion>4.0.0</modelVersion>
-    </parent>
+  <artifactId>double-buffer</artifactId>
-    <modelVersion>4.0.0</modelVersion>
+  <dependencies>
-
+    <dependency>
-    <artifactId>double-buffer</artifactId>
+      <groupId>org.apache.commons</groupId>
-
+      <artifactId>commons-lang3</artifactId>
-    <dependencies>
+    </dependency>
-        <dependency>
+    <dependency>
-            <groupId>org.apache.commons</groupId>
+      <groupId>org.junit.jupiter</groupId>
-            <artifactId>commons-lang3</artifactId>
+      <artifactId>junit-jupiter-engine</artifactId>
-        </dependency>
+      <scope>test</scope>
-        <dependency>
+    </dependency>
-            <groupId>org.junit.jupiter</groupId>
+  </dependencies>
-            <artifactId>junit-jupiter-engine</artifactId>
+  <build>
-            <scope>test</scope>
+    <plugins>
-        </dependency>
+      <plugin>
-    </dependencies>
+        <groupId>org.apache.maven.plugins</groupId>
-    <build>
+        <artifactId>maven-assembly-plugin</artifactId>
-        <plugins>
+        <executions>
-            <plugin>
+          <execution>
-                <groupId>org.apache.maven.plugins</groupId>
+            <configuration>
-                <artifactId>maven-assembly-plugin</artifactId>
+              <archive>
-                <executions>
+                <manifest>
-                    <execution>
+                  <mainClass>com.iluwatar.doublebuffer.App</mainClass>
-                        <configuration>
+                </manifest>
-                            <archive>
+              </archive>
-                                <manifest>
+            </configuration>
-                                    <mainClass>com.iluwatar.doublebuffer.App</mainClass>
+          </execution>
-                                </manifest>
+        </executions>
-                            </archive>
+      </plugin>
-                        </configuration>
+    </plugins>
-                    </execution>
+  </build>
-                </executions>
+</project>
-            </plugin>
-        </plugins>
-    </build>
-
-</project>

double-checked-locking/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Double Checked Locking
-category: Idiom
+folder: double-checked-locking
+permalink: /patterns/double-checked-locking/
+categories: Idiom
 language: en
 tags:
  - Performance

double-checked-locking/pom.xml

@@ -27,7 +27,7 @@
   <parent>
     <groupId>com.iluwatar</groupId>
     <artifactId>java-design-patterns</artifactId>
-    <version>1.25.0-SNAPSHOT</version>
+    <version>1.26.0-SNAPSHOT</version>
   </parent>
   <artifactId>double-checked-locking</artifactId>
   <dependencies>

double-checked-locking/src/main/resources/logback.xml

@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     The MIT License
@@ -23,30 +24,26 @@
 
 -->
 <configuration>
-    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
+  <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
-        <file>double-checked-locking.log</file>
+    <file>double-checked-locking.log</file>
-        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
+    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
-            <fileNamePattern>double-checked-locking-%d.log</fileNamePattern>
+      <fileNamePattern>double-checked-locking-%d.log</fileNamePattern>
-            <maxHistory>5</maxHistory>
+      <maxHistory>5</maxHistory>
-        </rollingPolicy>
+    </rollingPolicy>
-        <encoder>
+    <encoder>
-            <pattern>%-5p [%d{ISO8601,UTC}] %c: %m%n</pattern>
+      <pattern>%-5p [%d{ISO8601,UTC}] %c: %m%n</pattern>
-        </encoder>
+    </encoder>
-    </appender>
+  </appender>
-
+  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
-    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder>
-        <encoder>
+      <pattern>%-5p [%d{ISO8601,UTC}] %c: %m%n</pattern>
-            <pattern>%-5p [%d{ISO8601,UTC}] %c: %m%n</pattern>
+    </encoder>
-        </encoder>
+  </appender>
-    </appender>
+  <logger name="com.iluwatar" additivity="false">
-
+    <level value="DEBUG" />
-    <logger name="com.iluwatar" additivity="false">
+    <appender-ref ref="FILE" />
-        <level value="DEBUG"/>
+  </logger>
-        <appender-ref ref="FILE"/>
+  <root level="WARN">
-    </logger>
+    <appender-ref ref="STDOUT" />
-
+  </root>
-    <root level="WARN">
-        <appender-ref ref="STDOUT"/>
-    </root>
-
 </configuration>

double-dispatch/README.md

@@ -1,6 +1,9 @@
 ---
+layout: pattern
 title: Double Dispatch
-category: Idiom
+folder: double-dispatch
+permalink: /patterns/double-dispatch/
+categories: Idiom
 language: en
 tags:
  - Extensibility