Introduction to Method Overriding:

• Firstly, let’s understand the overriding in object-oriented terms. Overriding means override the functionality of an existing method.
• If the subclass or child class has the same method as we declared in the superclass or parent class, it is called Method overriding in Java.

Use of Method Overriding:

• It is used to give us the implementation of a method that is already provided by its superclass.
• It is used for runtime polymorphism (many forms).

Rules about the Method Overriding:

• First, the method signature, like method name, its parameter list, and also the return type, have to match exactly.
• The method should have the same name as same as the parent class.
• The method must have the same parameter as the same as the parent class has.

Difference between Method Overloading and Method Overriding:

Method Overloading:

• • It is in the same class, where we have more than one method having the same name but different parameters.   

Method Overriding:

• It is one of the methods which is also defined in the subclass as the same in the superclass. 
• In this, the parameters of the method remain the same.    

Note: Method Overriding is mostly used to achieve Run Time Polymorphism.