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Java Development Tutorials

Single Inheritance in Java with Example

August 6, 2015 by javainterviewpoint 1 Comment

Inheritance is one of the key features of object-oriented programming (OOP).Single Inheritance enables a derived class(Sub class) to inherit properties and behavior from a single parent class(Super class). 

Flow Diagram

The below diagram represents the single inheritance in java where Class B extends only one class Class A. Here Class B will be the Sub class and Class A will be one and only Super class.

Single_Inheritance_in_Java
Example of Single Inheritance

Below code represents Single Inheritance in Java, where we can see the Rectangle class is inheriting only one parent class(Shape class).

package com.javainterviewpoint.inheritance;
public class Shape 
{
    int length;
    int breadth;
}
public class Rectangle extends Shape
{
    int area;
    public void calcualteArea()
    {
        area = length*breadth;
    }
    public static void main(String args[])
    {
        Rectangle r = new Rectangle();
        //Assigning values to Shape class attributes
        r.length = 10;
        r.breadth = 20;
        //Calculate the area
        r.calcualteArea();
        System.out.println("The Area of rectangle of length \""
                +r.length+"\" and breadth \""+r.breadth+"\" is \""+r.area+"\"");
    }
}

Output :

The Area of rectangle of length "10" and breadth "20" is "200"

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Filed Under: Core Java, Java, OOPs Tagged With: Inheritance, Java, Single Inheritance, Single Inheritance Example

Comments

  1. Dr. Rajshree says

    April 21, 2020 at 8:45 am

    Very Nice and easy to understand

    Reply

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