Proxy Pattern

• intent - to provide a surrogate/placeholder for another object to control access, defer creation, or add extra behavior

Adapter Pattern

• intent - convert one interface into another that the client expects

Decorator (Wrapper - Smart Proxy) Pattern

• intent - add behavior to an object dynamically without modifying its class

Facade Pattern

• intent - provide a simple interface to a complex subsystem

Bridge Pattern

• intent - to decouple an abstraction/interface from its implementation so that the two can vary independently (uses dependency injection)

Dependency Injection (DI)

• intent - to decouple objects from their dependencies by providing those dependencies from the outside rather than having the objects construct them themselves

Composite Pattern - Object Tree Pattern

• intent - to create uniform treatment of single objects and groups