Design Patterns

# Creational Patterns

1. Factory Method

2. Abstract Factory

3. Singleton

4. Builder

5. Prototype

# Structural Patterns

1. Composite

2. Decorator

3. Proxy

4. Adapter

5. Facade

# Behavioral Patterns

1. Observer

2. State

3. Strategy

4. Template Method

5. ChainOfResponsibility

6. Memento

7. Visitor

8. Command

9. Mediator