Gang of Four(GOF) Design Patterns are divided in to 3 categories. Creational Design Patterns ( 5 Patterns ) AbstractFactory Builder Method Factory Method Prototype Singleton Singleton pattern is used when there is only one instance of the object need to be created per JVM instance. This pattern is used internally by the Connection Pooling to create the objects only on demand. Structural Design Patterns ( 7 Patterns ) Adapter Bridge Pattern Composite Pattern Decorator Pattern Facade FlyWeight FlyWeight Pattern is used when there are a large number of objects to be created, and they need to be created efficiently. This pattern is used by many frame works to create the objects using configuration. Proxy Behavioral Design Patterns ( 11 Patterns ) Chain Of Responsibility Pattern Command Interpreter Iterator Mediator Memento Memento is used internally by Text Editor Applications, where ctr+Z or cmd+Z operations are used to remember the snap shot of the data. State State Design Pattern is use...
Comments
Post a Comment