What is Inheritance in Java?

Inheritance is an important feature of OOP(Object Oriented Programming). It is the mechanism in java by which one class is allow to inherit the features(fields and methods) of another class.
Important terminology:
  • Super Class: The class whose features are inherited is known as super class(or a base class or a parent class).
  • Sub Class: The class that inherits the other class is known as sub class(or a derived class, extended class, or child class). The subclass can add its own fields and methods in addition to the superclass fields and methods.
  • Reusability: Inheritance supports the concept of “reusability”, i.e. when we want to create a new class and there is already a class that includes some of the code that we want, we can derive our new class from the existing class. By doing this, we are reusing the fields and methods of the existing class.
Syntax of Inheritance:

class SubclassName extends SuperclassName  
   //methods and fields  

The extends keyword is used to create a new class that derives from an existing class.

Let us see how extends keyword is used to achieve Inheritance.
class Vehicle.
class Car extends Vehicle
 .......   //extends the property of vehicle class.

Now based on above example. In OOPs term we can say that,
  • Vehicle is super class of Car.
  • Car is sub class of Vehicle.
  • Car IS-A Vehicle.

Simple example of Inheritance

class Parent
    public void p1()
        System.out.println("Parent method");
public class Child extends Parent {
    public void c1()
        System.out.println("Child method");
    public static void main(String[] args)
        Child cobj = new Child();
        cobj.c1();   //method of Child class
        cobj.p1();   //method of Parent class

Output: Child method Parent method

Click here to find complete Java Tutorials Series

Java OOPS   << Previous     ||     Next >>   Java Encapsulation

Follow Us

YouTube Channel | Facebook Page | Telegram Channel | Quora Space
Feel free to ask queries or share your thoughts in comments or email us.


Popular posts from this blog

10+ Best Demo Websites for Selenium Automation Testing Practice

Automate Amazon like E-Commerce Website with Selenium WebDriver

Handle Static and Dynamic Web Table in Selenium WebDriver

How to Automate Google Search with Selenium WebDriver

Top 7 Web Development Trends in 2022

25+ Most Important Selenium WebDriver Commands Tutorial

50+ Most Important Selenium WebDriver Interview Questions and Answers

How to Find Broken Links on Webpage with Selenium WebDriver