Method Overloading In Java | How to achieve method overriding? | Why method overriding?

                                 Method Overloading

Def: Inheriting a method of super class and changing the implementation in sub-class is known as method overriding.  

Question . Why method overriding?

Ans - To achieve run time polymorphism and code maintainability.

Question . How to achieve method overriding?

Ans - Re-write the same method signature  of the super class and change the implementation in the sub class.

                                             Example Of method overriding:

class BipinSir{//=============Example of Method Overriding=============

void property(){

System.out.println(" property of BipinSir");

}

void decision(){

System.out.println(" BipinSir Decides Pinki");

}

}

class Pintu extends BipinSir{

void decision(){                     // Override decision method

System.out.println(" Pintu Decides Chumki");

}

}

class TestPintu{

public static void main(String[] args) {

Pintu p = new Pintu();

p.property();

p.decision();

}

}

Output:

 property of BipinSir

 Pintu Decides Chumki

Q. Which are the methods of superclass which can't be override by subclass?

1. Static method: static methods are class level

2. Final method: final keyword does not allow to change

Private method: private access within the class only.