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Work on #226, #213, added references of Gang Of Four to all GoF patterns, added tag for Gang Of Four, added difficulty tags to some of them

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Narendra Pathai
2015-09-22 18:25:56 +05:30
parent dd0fcea090
commit b3e4e8a47b
23 changed files with 168 additions and 22 deletions
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observer/index.md
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@ -4,7 +4,10 @@ title: Observer
folder: observer
permalink: /patterns/observer/
categories: Behavioral
tags: Java
tags:
- Java
- Difficulty-Beginner
- Gang Of Four
---
**Intent:** Define a one-to-many dependency between objects so that when one
@ -26,3 +29,7 @@ automatically.
**Real world examples:**
* [java.util.Observer](http://docs.oracle.com/javase/8/docs/api/java/util/Observer.html)
**Credits**
* [Design Patterns: Elements of Reusable Object-Oriented Software](http://www.amazon.com/Design-Patterns-Elements-Reusable-Object-Oriented/dp/0201633612)