Manufacturing Java Objects with the Factory Method Design Pattern
by Barry Burd and Michael P. Redlich
This article, the third in a series about of design patterns, introduces the Factory Method design pattern, one of the 23 design patterns defined in the legendary 1995 book Design Patterns—Elements of Reusable Object-Oriented Software. The authors of this book, Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides, are known affectionately as the Gang of Four (GoF).
Design Patterns
The GoF book defines 23 design patterns. The patterns fall into three categories:
- A creational pattern abstracts the instantiation process.
- A structural pattern groups objects into larger structures.
- A behavioral pattern defines better communication among objects.
The Factory Method design pattern fits into the creational category.
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