Method overriding means same method has written in both child and parent classes.overloading means write same method with different signatures.But I want to know what is the use of these concepts.how to use this type of polymorphism in real time? thanks in advance
Overriding is useful when you want to change the functionality of some method based on a class. For example, by overriding the toString() method of Object class, we can use it with different classes.
Overloading is useful to add flexibility to a method. In general, if you want to create a method that adds two numbers then it only take either integer, double, or float but by overloading, you can add values of all data types.