Factory Method

The Factory Method design pattern defines an interface for creating an object, but let subclasses decide which class to instantiate. This pattern lets a class defer instantiation to subclasses.

Usage          High

UML class diagram

A visualization of the classes and objects participating in this pattern.

Sample code

This structural code demonstrates the Factory method offering great flexibility in creating different objects. The Abstract class may provide a default object, but each subclass can instantiate an extended version of the object.

Output

See also

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• Common Design Patterns
• Design Guidelines
• Documentation