Design Patterns in Java

1. A simple demonstration of State Design Pattern in Java through a program.
2. A simple demonstration of Strategy Design Pattern in Java through a program.
3. How to implement Singleton Design Pattern in java with a simple program ?
4. How to implement Factory Design Pattern in Java with a simple program ?
5. How to implement Adapter Design Pattern in Java with a Real World scenario ?.
6. How to implement Dynamic Proxy Design Pattern in Java ?.
7. How to implement Abstract Factory Design Pattern in Java ?.
8. How to implement Chain Of Responsibility Design Pattern in Java using simple example ?.
9. How to implement Command Design Pattern in Java using simple example ?.
10. How to make a class singleton in Java using Singleton Design Pattern ?.
11. How to implement Prototype Design Pattern in Java ?.
12. How to implement Factory Design Pattern in Java ?.
13. How to implement Builder Design Pattern in Java ?.
14. How to implement Composite Design Pattern in Java ?.
15. How to implement Iterator Design Pattern in Java ?.
16. Decorator Design Pattern in Java
17. Observer Design Pattern in Java