Factory pattern

Gang of Four Design Patterns

List of the Original 23 Patterns PurposeDesign PatternAspect(s) that can varyStructuralCompositestructure and composition of an objectDecoratorresponsibilities of an object without subclassingFacadeinterface to a subsystemFlyweightstorage costs of objectsDesign Patterns cs.lmu.edu › ~ray › notes › designpatterns

As per the design pattern reference book Design Patterns – Elements of Reusable Object-Oriented Software , there are 23 design patterns which can be classified in three categories: Creational, Structural and Behavioral patterns.