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Creational Design Patterns

By Sukesh Marla Sep 19, 2012
Design Patterns are Reusable and Documented solutions for commonly occurring problems in software development.
Creational Patterns

We use the "new" keyword whenever we want to create a new object and creational patterns solve problems related to the creation of objects.

They are:

Singleton - Ensures that only a single instance of a given object can exist at a context
Factory - Factory Method Pattern defines an interface for creating an object, but let the subclasses decide which class to instantiate.
Abstract Factory - It provides an Interface for creating families of related or dependent objects without specifying their concrete classes
Builder - Separate the construction of a complex object from its representation so that the same construction process can create different representations.
Prototype - Allow to create new instance from existing one.