DesignPatterns

Java Design Patterns

A design patterns are well-proved solution for solving the specific problem/task.

Advantage of design pattern:

1. Reusable in multiple projects.

2.helps to design system architecutre

We must use the design patterns during the analysis and requirement phase of SDLC(Software Development Life Cycle).

Three types of Design Patterns:

1. Creational Design Patterns

1. Factory Pattern 2. Abstract Factory Pattern 3. Singleton Pattern
4. Prototype Pattern 5. Builder Pattern.

2. Structural Design Patterns

1. Adapter Pattern 2. Bridge Pattern  3. Composite Pattern  4. Decorator Pattern
5. Facade Pattern  6. Flyweight Pattern  7. Proxy Pattern

3. Behavioral Design Patterns

1. Chain Of Responsibility Pattern  2. Command Pattern   3. Interpreter Pattern
4. Iterator Pattern  5. Mediator Pattern   6. Memento Pattern   7. Observer Pattern
8. State Pattern     9. Strategy Pattern    10.Template Pattern   11. Visitor Pattern

Creational Design Patterns:

1. Factory Pattern or Factory Method Pattern 

2.  Abstract Factory Pattern

3. Decorator Design Pattern