Presentation given on Aug 2006 at Symbion Health and on Jun 2007 at Melbourne Patterns Group

1. Factory Method Pattern Define an interface for creating an object, but let subclasses decide which class to instantiate. Factory Method lets a class defer instantiation to subclasses.

5. Factory Method Pattern Define an interface for creating an object, but let subclasses decide which class to instantiate. Factory Method lets a class defer instantiation to subclasses.

7. Factory Method Structure

10. Examples

11. Example 2