defines a higher-level interface that makes a subsystem easier to use Façade simplifies access to a related set of objects by providing one object that all objects outside the set use to communicate with the set defines a higher-level interface that makes a subsystem easier to use Façade Class subsystem March 2007 ACS - 3913 Ron McFadyen

Façade Facade knows the subsystem classes and delegates requests to appropriate subsystem objects.                                                           facade Façade Class Facade subsystem Subsystem has no knowledge of the facade - has no reference of it March 2007 ACS - 3913 Ron McFadyen

Consider text example … Façade A Façade simplifies access to a related set of objects by providing one object that all objects outside the set use to communicate with the set. This avoids the problem of having to reference many different, complicated interfaces to each object of that set. Consider text example … March 2007 ACS - 3913 Ron McFadyen

Façade vs Adapter Adapter Façade provides an object that acts as an intermediary for method calls between client objects and one other object not known to the client objects. provides an object that acts as an intermediary for method calls between client objects and multiple objects not know to the client objects. March 2007 ACS - 3913 Ron McFadyen