Abstract Method In Java?

Abstract:   

An abstract is a return Type.It must be a extended or sub class.a abstract class contain static data.Any class with an abstract method is automatically abstract itself .

Syntax : abstract class class_Name

               {

                     // Body

               }

Rules :

• Abstract classes are not Interface.

• An abstract class must have an abstarct method.

• Abstract classes can have constructors,member variables and normal methods.

• Abstract class Never instatiated.

• When you extend abstarct class with abstarct method,you must define the abstract method in the child class.