Four design patterns

Creational patterns

• Factory Pattern
• Abstract Factory Pattern
• Singleton Pattern
• Builder pattern
• Prototype pattern

Structural patterns

• Adapter Pattern
• Bridge Pattern
• Composite Pattern
• Decorator Pattern
• Facade Pattern
• Flyweight Pattern
• Proxy pattern

Behavioral patterns

• Chain of Responsibility Pattern,
• Command Pattern
• Interpreter Pattern
• Iterator Pattern
• Mediator Pattern
• Memento Pattern
• Observer Pattern
• State pattern
• Strategy Pattern
• Template Pattern
• Visitor Pattern