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* Archietecture Diagram added * Added pom.xml * Architecture Diagram Updated * Added Microservices and kafka * ReadME File Added * ReadME file Updated * #1329 ReadMe file updated and working pattern code added * #1329 readme file updated * #1329 readme file updated and java documentation added * #1329 repository merged * Update claim-check-pattern/ReadME.md #1329 Real world description updated Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com> * #1329 Update claim-check-pattern/ReadME.md Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com> * #1329 Applicability section in ReadMe file updated Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com> * #1329 Tutorial section in ReadMe file updated Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com> * #1329 Storage Data section in ReadMe File updated Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com> * #1329 workflow section Update claim-check-pattern/ReadME.md Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com> * #1329 Update claim-check-pattern/pom.xml Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com> * #1329 deleted mvnw.cmd file * #1329 deleted drawio file * #1329 deleted mvnw file * #1329 deleted mvnw file * #1329 mvnw.cmd file deleted * #1329 Update claim-check-pattern/usage-cost-processor/src/main/java/com/callusage/domain/MessageHeader.java Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com> * #1329 Update claim-check-pattern/usage-cost-processor/src/main/java/com/callusage/domain/UsageCostDetail.java Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com> * #1329 Update claim-check-pattern/usage-cost-processor/src/main/java/com/callusage/domain/UsageDetail.java Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com> * #1329 deleted mvnw file * #1329 deleted mvnw.cmd file * #1329 Update claim-check-pattern/usage-detail-sender/src/main/java/com/callusage/domain/Message.java Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com> * #1329 Update claim-check-pattern/ReadME.md Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com> * #1329 pom file dependencies fixed, readmeflie updated, removed unused imports * #1329 Readfile updated, class javadoc added * #1329 UML class diagrams added, readme file updated * #1329 lombok annotations used on model classes, common dependencies moved to parent pom * #1329 test cases added * include claim-check-pattern in parent pom * #1329 code smells fixed * #1329 code smells removed * #1329 security issues fixed * #1329 updated pom files and refactored packages name * #1329 checkstyle warning fixed * #1329 code coverage increased * #1329 minor changed. * checkpoint created with common utility * Claim-Check-Pattern | Shrirang97 | Implemented using Java Azure Functions * Claim-Check-Pattern | Shrirang97 | Updated Functions logic * Update MessageHandlerUtility.java * Update UsageCostProcessorFunction.java * claim-check-pattern | Shrirang97 | Added test cases * claim-check-pattern | Shrirang97 | Test cases for Azure functions fixed * Claim-Check-Pattern | Shrirang | Used string as request body * claim-check-pattern | Shrirang | Working test cases * claim-check-pattern | Shrirang | Issue fixed while deserializing * claim-check-pattern | Shrirang | removed unused import * claim-check-pattern | Shrirang | fixed refactoring * claim-chek-pattern | Shrirang | added lombok | fixed dependencies & test cases * Delete .DS_Store * claim-check-pattern | Shrirang | Fixed unrelated file * Update BookService.java * Update BookService.java * claim-check-pattern | Shrirang | Fixed unrelated files * claim-check-pattern | Shrirang | Fixed review comments * Update UsageCostProcessorFunction.java * Update ReadME.md * Rename ReadME.md to README.md * claim-check-pattern | Shrirang | Incorporated review comments. * Update cloud-claim-check-pattern/README.md Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com> * Update cloud-claim-check-pattern/README.md Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com> * Update cloud-claim-check-pattern/README.md Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com> * Update cloud-claim-check-pattern/README.md Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com> * Update cloud-claim-check-pattern/README.md Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com> * Update cloud-claim-check-pattern/README.md Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com> * Update cloud-claim-check-pattern/README.md Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com> * Updated readme file * Read me file updated | Added more description Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com> Co-authored-by: Subhrodip Mohanta <hello@subho.xyz> Co-authored-by: Ilkka Seppälä <iluwatar@users.noreply.github.com>
Design patterns implemented in Java
Read in different language : zh, ko, fr, tr, ar, es, pt, id, ru, de, ja
Introduction
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 development paradigms.
Reusing design patterns help prevent subtle issues that cause major problems, and it also improves code readability for coders and architects who 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 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 of as programming tutorials on how to implement a specific pattern. We use the most popular battle-proven open-source Java technologies.
Before you dive into the material, you should be familiar with various Software Design Principles.
All designs should be as simple as possible. You should start with KISS, YAGNI, and Do The Simplest Thing That Could Possibly Work principles. Complexity and patterns should only be introduced when they are needed for practical extensibility.
Once you are familiar with these concepts you can start drilling down into the available design patterns by any of the following approaches
- Search for a specific pattern by name. Can't find one? Please report a new pattern here.
- Using tags such as
Performance,Gang of FourorData access. - Using pattern categories,
Creational,Behavioral, and others.
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 while developing them.
How to contribute
If you are willing to contribute to the project you will find the relevant information in our developer wiki. We will help you and answer your questions in the Gitter chatroom.
License
This project is licensed under the terms of the MIT license.
