Factory Method

Intent, Motivation, Applicability, Structure, Participants, Collaborations, Consequences, Implementation, Sample Code, Known Uses, Related Patterns

Participants

• Product (Document)

• defines the interface of objects the factory method creates.
• ConcreteProduct (MyDocument)

• implements the Product interface.
• Creator (Application)

• declares the factory method, which returns an object of type Product. Creator may also define a default implementation of the factory method that returns a default ConcreteProduct object.
• may call the factory method to create a Product object.
• ConcreteCreator (MyApplication)

• overrides the factory method to return an instance of a ConcreteProduct.

Participants of Abstract Factory, Adapter, Bridge, Builder, Chain of Responsibility, Command, Composite, Decorator, Facade, Factory Method, Flyweight, Interpreter, Iterator, Mediator, Memento, Observer, Prototype, Proxy, Singleton, State, Strategy, Template Method, Visitor