What is Adapter Design Pattern The Adapter Design pattern is use when a client expects interfaceA but is provided with interfaceB. The adapter maps the methods from interfaceB to interfaceA. This pattern is used when the client expects certain methods in an interface or class(adaptee) but the adaptee does not provide those methods (Note that … Read more

This is the last of the creational patterns. In the earlier tutorials we have seen the factory method, the abstract factory pattern, the builder pattern and the prototype pattern. In this tutorial we will look at the Singleton pattern. The singleton pattern ensures that only once instance of a class is created and the client … Read more

What is the Prototype Design Pattern The prototype design pattern is a method where a new instance of an object is obtained by asking a manager to return the clone of one. In the earlier tutorials we saw how abstract factory pattern can be used to create a family of objects and builder pattern can … Read more

Abstract factory pattern is a creational pattern. It provides an interface using which a client can instantiate a group of related Objects. This tutorial explains the Abstract factory pattern using a Car manufacturing algorithm. Example We design a framework that can build cars. We build two types of cars, a Mazda and a Ferrari. The … Read more

What is Factory Method? Factory method is a creational pattern that helps in abstracting the process of object creation. What this means is that the class that uses the object is not necessarily the class that instantiates the object. In fact, the class that uses the object has absolutely no idea about the exact type … Read more