Design Pattern Using Abstract Class

The abstract factory pattern is used when you want to return several related classes of objects each of which can return several different objects on request.

Design pattern using abstract class. Here s the animal interface. This structural code demonstrates the abstract factory pattern creating parallel hierarchies of objects. Abstract factory design pattern is one of the creational pattern. First we ll create a family of animal class and will later on use it in our abstract factory.

Object creation has been abstracted and there is no need for hard coded class names in the client code. In the above abstract factory design pattern the source code template client has two private fields that hold the instances of abstract product classes. In this article you will learn how to implement factory method design pattern in c and net. In abstract factory pattern an interface is responsible for creating a factory of related objects without explicitly specifying their classes.

Typically you may use the abstract factory pattern in conjunction with other factory patterns like simple factory pattern and the factory method pattern. The factory design pattern in c is used to replace class constructors abstracting the process of object generation so that the type of the object instantiated can be determined at run time. After that we ll manage access to them using an abstract factory abstractfactory. Abstract factory defines an interface for creating all distinct products but leaves the actual product creation to concrete factory classes.

Using this pattern a framework is defined which produces objects that follow a general pattern and at runtime this factory is paired with any concrete factory to produce objects that follow the pattern of a certain country. Abstract factory is a creational design pattern which solves the problem of creating entire product families without specifying their concrete classes. Abstract factory pattern is almost similar to factory pattern is considered as another layer of abstraction over factory pattern. Structural code in c.

In this example we ll create two implementations of the factory method design pattern. Abstract factory patterns work around a super factory which creates other factories. In order to prevent it the abstract factory design pattern is used.