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Uses of Abstract Factory...

Anil Vupputuri
Ranch Hand

Joined: Oct 31, 2000
Posts: 527
In Creational Patterns, where we can use Abstract Factory patterns. what is the diff. b/w Abstract Factory and Factory method.

SCJP 1.5, SCEA, ICED (287,484,486)
Avijeet Dash
Ranch Hand

Joined: Jan 21, 2001
Posts: 148
Imagine supporting two windowing environments, Microsoft Windows´┐Żand the X Window System.
Create an Abstract Factory class WindowFactory defining methods like #createButton. Add subclasses MSWindowFactory and XWindowFactory which implement #createButton to answer instances of MSButton or XButton respectively. A window painter can then be given an instance of MSWindowFactory or XWindowFactory. Sending it the #createButton message will result in an instance of MSButton or Xbutton. Assuming they respond to the same protocol, the client can remain ignorant of the class of the resultant button.
Abstarct Factory Class: WindowFactory
FactoryMethod(s): newWindow() which will return either MSWindowFactory or XWindowFactory. and createButton().
It is sorta covered in the JavaRanch Style Guide.
subject: Uses of Abstract Factory...
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