发布时间：2012-12-23 20:33:33

Template method lets abstract base class (this is the class to implement the algorithm) to implement invariant algorithm. The subclasses can redefine the algorithm when necessary. By this mechanism, we can reuse the code.Normally, factory method is used by template to get instance of concrete s......【阅读全文】

发布时间：2012-12-23 20:29:27

chain of responsibilityWhen one object does not know which specific object will handle its request, the chain of responsibility can be used to forward request among all possible receivers to get final destination. The receivers are normally from same class hirarchy whose base class is one action-han......【阅读全文】

发布时间：2012-12-23 20:26:23

Factory method is virtual method to create local-specific object in the class hierarchy. The base class may or not implement it.If a parameter is passed to create method to create product by calling its virtual methods.this is abstract factory. The client can get all components from abstra......【阅读全文】

发布时间：2012-12-23 20:23:15

The decorator has same interfaces to component to which it enhances functions or appearance. It is also called wrapper. With this pattern, client does not need to subclass or change components it uses.The decorator owns reference to component it decorates. The client references one compone......【阅读全文】

发布时间：2012-12-23 20:17:11

Bridge pathern is used to decouple abstraction and implementation so that both can involve independently. This makes it easy to modify, extend and reuse abstraction and implementation independently.Abstraction owns one reference of implementer. Client does not know which implementer it is handling. ......【阅读全文】