Abstract Methods and Classes

Abstract Methods and Classes

Whenever a class contains a method only for the purpose of overriding but does not have any body such methods has to be declare as Abstract Methods. Once a class contains at least one abstract method the class must be declared as abstract and for an abstract class we cannot create any instances but it can be inherited. Every method in the abstract class has to be override.

Ex:      abstract class common

            {

                        abstract void assign();

                        abstract void show();

            }