Builder

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

Collaborations

• The client creates the Director object and configures it with the desired Builder object.
• Director notifies the builder whenever a part of the product should be built.
• Builder handles requests from the director and adds parts to the product.
• The client retrieves the product from the builder.

The following interaction diagram illustrates how Builder and Director cooperate with a client.

Collaborations 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