#48 What is Inheritance in Java
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In this lecture we will learn:
What is inheritance in Java?
Use of extend keyword in inheritance
The main aim of inheritance
Important points related to inheritance
#1
For every class that we create in a code, there will be a class file.
Inheritance helps to add more features by inheriting the class.
For inheritance, we only required the class file. There is no need for a java file.
extends keyword is used in inheritance to inherit properties of a parent class.
#2
The main aim of inheritance is to implement the concept of reusability, saving our time and resources and also creating better connections between different classes, and achieving method overriding.
#3
Points related to inheritance in Java:-
The superclass of every class is an Object class.
In the absence of any other explicit superclass, every class is implicitly a subclass of the Object class.
A superclass can have any number of subclasses but a subclass can have only one superclass.
Constructors are not members, so they are not inherited by subclasses, but the constructor of the superclass can be invoked from the subclass.
A subclass does not inherit the private members of its parent class.
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