Facade pattern is used to hide the complexity of underlying subsystems. A new layer is created as Facade, which works as an entry point for the client. This article demonstrates Facade pattern implementations in Java.
Facade pattern adds a new layer to the system, on top of the underlying complex subsystems. This new layer works as an entry point for the client. The client can interact with this new layer, instead of communicating with the subsystems directly. That way the client does not need to be aware of the subsystems and gets a common interface.
