Abstract Class :

• when we create abstract class then we can not create object of that abstract class.
• If we want to use abstract class then we only access with derived class .
• Just abstract write before the class name.
• when we create abstract class two condition occurs one is abstract method like :- abstract protected function name ( );
• abstract means incomplete method we declare but not implement (code).
• In derived class we have to implement of that abstract method.