??Run Time Polymorphism in java | Dynamic Method Dispatch | Method overriding

Runtime polymorphism or Dynamic Method Dispatch or dynamic binding or late binding or Method overriding

Definition: Declaring a method in the subclass which is already present in the parent class is known as method overriding.

Inheritance(IS-A) :- one class acquires the properties of another class

Rules
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1. Both the superclass and the subclass must have the same method name,
the same return type(Co-Variant Return Type)*, and the same parameter list.


In Java, run-time polymorphism can be achieved through method overriding. In this case, the method in the parent class is called "overridden method" and the method in the child class is called "overriding method"

why we will use Run Time PolyMorphism
Overriding is done so that a "child class can give its own implementation to a method" which is already provided by the parent class. without touching the parent class code.




@Override - 1.5 version Onwards




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