The Adapter pattern
, used to change the interface of one class to that of
another one.
The Bridge pattern
, intended to keep the interface to your client program
constant while allowing you to change the actual kind of class you
display or use. You can then change the interface and the underlying class
separately.
The Composite pattern
, a collection of objects, any one of which may be
either itself a Composite, or just a primitive object.
The Decorator pattern
, a class that surrounds a given class, adds new
capabilities to it, and passes all the unchanged methods to the underlying
class.
The Façade pattern
, which groups a complex object hierarchy and
provides a new, simpler interface to access those data.
The Flyweight pattern
, which provides a way to limit the proliferation of
small, similar class instances by moving some of the class data outside
the class and passing it in during various execution methods.
The Proxy pattern
, which provides a simple place-holder class for a more
complex class which is expensive to instantiate.