•Adapter
–Convert the interface of a class into another interface clients
expect. Adapter lets classes work together that couldn’t
otherwise because of incompatible
interfaces
•Bridge
–Decouple an abstraction from its implementation so that the two can vary independently
•Composite
–Compose objects into tree structures to represent part-whole
hierarchies. Composite lets clients treat individual objects and
compositions of objects
uniformly
•Decorator
–Attach additional responsibilities to an object dynamically. Decorators provide a flexible alternative to subclassing for
extending functionality
•