5ce932ceb7
- 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
21 lines
790 B
Markdown
21 lines
790 B
Markdown
---
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layout: pattern
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title: Mediator
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folder: mediator
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permalink: /patterns/mediator/
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categories: Behavioral
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tags: Java
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---
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**Intent:** Define an object that encapsulates how a set of objects interact.
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Mediator promotes loose coupling by keeping objects from referring to each
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other explicitly, and it lets you vary their interaction independently.
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**Applicability:** Use the Mediator pattern when
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* a set of objects communicate in well-defined but complex ways. The resulting interdependencies are unstructured and difficult to understand
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* reusing an object is difficult because it refers to and communicates with many other objects
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* a behavior that's distributed between several classes should be customizable without a lot of subclassing
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