Mediator

The Mediator design pattern defines an object that encapsulates how a set of objects interact. Mediator promotes loose coupling by keeping objects from referring to each other explicitly, and it lets you vary their interaction independently.

Usage          Medium-low

UML class diagram

A visualization of the classes and objects participating in this pattern.

Sample code

This structural code demonstrates the Mediator pattern facilitating loosely coupled communication between different objects and object types. The mediator is a central hub through which all interaction must take place.

Output

See also

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• Common Design Patterns
• Design Guidelines
• Documentation