CSC/ECE 517 Fall 2009/wiki3 16 AD

Definition

Factory Method is a creational pattern. This pattern helps to model an interface for creating an object which at creation time can let its subclasses decide which class to instantiate.It is called as Factory Pattern as it is responsible for "Manufacturing" an Object. It helps instantiate the appropriate Subclass by creating the right Object from a group of related classes. The Factory Pattern encourages loose coupling by eliminating the need to bind application-specific classes into the code.

Overview

This topic deals with the Factory method design pattern.It explains Factory design pattern and compares with other creational pattern to highlight the uniqueness and distinguishing features of the pattern.It also gives examples of where factory design pattern is used and scenarios wherein its more suitable than other creational patterns.

Comparison with other Creational Patterns

Comparison with Singleton Pattern

Singleton pattern is a creational pattern which is used in situations where just only one object of the class has to be created.