Java Design Patterns: A Hands-On Experience with Real-World Examples

© Vaskaran Sarcar 2019

Vaskaran SarcarJava Design Patternshttps://doi.org/10.1007/978-1-4842-4078-6_21

21. Mediator Pattern

Vaskaran Sarcar¹ 

(1)

Bangalore, Karnataka, India

 

This chapter covers the mediator pattern.

GoF Definition

Define 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.

Concept

A mediator takes the responsibility of controlling and coordinating the interactions of a specific group of objects that cannot refer to each other explicitly. So, you can imagine a mediator as an intermediary through whom these objects talk to each other. This kind of implementation helps reduce the number ...