What is the use of ' inherintance ' in java ?

Question

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Answer 1

Inheritance is the process that enables one class to acquire the properties (methods and variables) of another. With inheritance, the information is placed in a more manageable, hierarchical order.
like making one class and put some methods in it and we need this methods in other class in this case we use inheritance.

Answer 2

also You have polymorphism. object have more than one type. it is of his class, parents classes and implemented interfaces by self and parents. with this You can have a list of parent class but with instances of different sub classes