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Ilkka Seppälä committed 2014-08-24 10:28:31 +03:00
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##Adapter ##Adapter
**Intent:** Convert the interface of a class into another interface clients expect. Adapter lets classes work together that couldn't otherwise because of incompatible interfaces. **Intent:** Convert the interface of a class into another interface clients expect. Adapter lets classes work together that couldn't otherwise because of incompatible interfaces.
![alt text](https://github.com/iluwatar/java-design-patterns/blob/master/adapter/etc/adapter.jpg "Adapter")
**Applicability:** Use the Adapter pattern when
* you want to use an existing class, and its interface does not match the one you need
* you want to create a reusable class that cooperates with unrelated or unforeseen classes, that is, classes that don't necessarily have compatible interfaces
* you need to use several existing subclasses, but it's impractical to adapt their interface by subclassing every one. An object adapter can adapt the interface of its parent class.
##Bridge ##Bridge
**Intent:** Decouple an abstraction from its implementationso that the two can vary independently. **Intent:** Decouple an abstraction from its implementationso that the two can vary independently.