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Added real world example for Chain of Responsibility.

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Ilkka Seppälä 2015-02-25 16:31:52 +02:00
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* you want to issue a request to one of several objects without specifying the receiver explicitly
* the set of objects that can handle a request should be specified dynamically
**Real world examples:**
* [java.util.logging.Logger#log()](http://docs.oracle.com/javase/6/docs/api/java/util/logging/Logger.html#log%28java.util.logging.Level,%20java.lang.String%29)
## <a name="command">Command</a> [&#8593;](#list-of-design-patterns)
**Intent:** Encapsulate a request as an object, thereby letting you parameterize clients with different requests, queue or log requests, and support undoable operations.