Abstract

Abstract

         Abstract classes can not be instantiated.we cant create the objects for this class.

if can define both abstract and non abstract methods.

Syntax

       abstract class Example

       {

             private double price;

             private double rate;

             public abstract void first();

             public abstract void second();

       }

abstract class should contain abstract methods or non abstract methods.

Non abstract methods.  

                        it means concrete methods.

concrete methods call as like normal methods   

abstract class must be subclassed

Keyword:

               abstract,extends