Factory Method Pattern
Also known as: Virtual Constructor
The
Factory Method Pattern defines an interface for creating an object, but let
subclasses decide which class to instantiate. Factory Method lets a class
defer instantiation to subclasses.
Wizard
Applicability
Additional Resources

Option |
Description |
Default |
Source folder |
Enter a source folder for the new class. Either type a valid
source folder path or click Browse to select a source
folder via a dialog. |
The source folder of the element that was selected when the
wizard was started. |
Package |
Enter a package to contain the new class. Either type a
valid package name or click Browse to select a package via
a dialog. |
The package of the element that was selected when the wizard
has been started. |
Creator class |
Type or click Browse to
select the creator class. |
<Creator> |
Modifiers |
Select one or more access modifiers for the new class.
- public (uncheck for default visibility)
- abstract
|
public |
Superclass |
Type or click Browse to
select a superclass for this class. |
<java.lang.Object> |
Factory method |
Type or select the name of the factory
method |
<factoryMethod> |
Parameters |
Specify the parameters for the factory
method |
<blank> |

Option |
Description |
Default |
Product interface |
Type or click Browse to
select the product interface |
<Product> |
Concrete product classes |
Click Add to enter names of concrete
product classes that
should be created. |
<blank> |
Use the Factory Method pattern when
- a class can't anticipate the class of objects it must create.
- a class wants its subclasses to specify the objects it creates.
- classes delegate responsibility to one of several helper subclasses,
and you want to localize the knowledge of which helper subclass is the
delegate.
http://c2.com/cgi/wiki?FactoryMethodPattern
http://www.wikipedia.org/wiki/FactoryMethod_pattern
http://www.cmcrossroads.com/bradapp/javapats.html#FactoryMethod
http://www.dofactory.com/Patterns/pattern_factory.asp |