Method Overloading

• A child class can modify the method which is inherited from parent class
• Child class can create method with different functionality but with the same
• Name
• Return type
• Arguments and order
• This concept is known as Method Overloading
• The overloaded method can't have weaker access specifier in the child class

class Customer{

public void display(){

  System.out.println("Method of Customer class");

}

}

class RegularCustomer extends Customer{

public void display(){

  System.out.println("Method of Regular customer class");

}

class RetailStore{

public static void main(String args[]){

 

      RegularCustomer regObj=new RegularCustomer();

 

      regObj.display();

}

}

Output: Method of Regular customer class

Why method of customer class is invoked?

because to invoke base class method we have to use super keyword

so if we make changes in Retail class 

class RetailStore{

public static void main(String args[]){

      RegularCustomer regObj=new RegularCustomer();

      super.display(); 

      regObj.display();

}

}

Output: Method of Customer class

             Method of Regular customer class

Note: When super is used to invoke the overridden method of parent class, it need not be the first statement in the child class method unlike the use of this()/ super() for constructor invocation