Mediator Design Pattern is one of the Behavioral Design Pattern. With the Mediator Design Pattern, communication between objects is encapsulated with a mediator object. Objects no longer communicate directly with each other, but instead communicate through the mediator. This reduces the dependencies between communicating objects, thereby lowering the coupling. Definition GoF Definition: Define an object that encapsulates […]

Observer Design Pattern is one of the Behavioral Design Pattern. Observer design pattern is useful when you are interested in the state of an object and want to get notified whenever there is any change.  Definition GoF Definition : The Observer Design Pattern defines a one-to-many dependency between objects so that when one object changes state, all […]