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java-design-patterns/servant/index.md
Markus 5ce932ceb7 Work on #213 
- properly categorize all patterns
- remove pattern list from readme
- minor fixes to readme
- removed "introduction" because its not a pattern and an error i
committed some time ago
2015-08-20 21:40:07 +02:00

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pattern Servant servant /patterns/servant/ Structural Java

Intent: Servant is used for providing some behavior to a group of classes. Instead of defining that behavior in each class - or when we cannot factor out this behavior in the common parent class - it is defined once in the Servant.

alt text

Applicability: Use the Servant pattern when

  • when we want some objects to perform a common action and don't want to define this action as a method in every class.