February 10th, 2009 
Ntt.cc 
Ok, the last pattern now. Let’s take a look the intent directly.
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.
– By THE GOF BOOK
From this intent, we can get that this pattern is use for encapsulating the interaction of objects.
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