Creational Design Patterns provide solution to instantiate an object in the best possible way for specific situations. Following design patterns come under this category.

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

Structural Design Patterns provide different ways to create a class structure, for example using inheritance and composition to create a large object from small objects. Following design patterns come under this category.

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

Behavioral Design Patterns provide solution for the better interaction between objects and how to provide lose coupling and flexibility to extend easily. Following design patterns come under this category.

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