JAVA EE: Java Tutorial : Inheritance in Java Example

Thursday, 13 August 2015

Java Tutorial : Inheritance in Java Example

Click here to watch in Youtube :
https://www.youtube.com/watch?v=x8y_2Gkn-N8&list=UUhwKlOVR041tngjerWxVccw

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Employee.java

/**
 * Employee class is the Super class.
 */
public class Employee
{
    int salary = 50000;

    public void run()
    {
        System.out.println("Can run");
    }

    public void walk()
    {
        System.out.println("Can Walk");
    }

}

SoftwareEngineer.java

/**
 * SoftwareEngineer class is the sub class which
 * extends Employee Super class.
 */
public class SoftwareEngineer extends Employee
{
    int bonus = 30000;
    
    public void talkAboutJava()
    {
        System.out.println("Can talk about Java");
    }
}

InheritanceExample.java

public class InheritanceExample
{
    public static void main(String[] args)
    {
        SoftwareEngineer softwareEngineer = new SoftwareEngineer();

        /*
         * SoftwareEngineer object can access the field and methods of own class
         * as well as of Employee class i.e. code reusability.
         */

        System.out.println("Properties");
        System.out.println("-----------------");
        System.out.println("SoftwareEngineer salary is:"
                + softwareEngineer.salary);

        System.out.println("Bonus of SoftwareEngineer is:"
                + softwareEngineer.bonus);

        System.out.println("\nBehaviours");
        System.out.println("-----------------");
        softwareEngineer.run();
        softwareEngineer.walk();
        softwareEngineer.talkAboutJava();

    }

}

Output

Properties
-----------------
SoftwareEngineer salary is:50000
Bonus of SoftwareEngineer is:30000

Behaviours
-----------------
Can run
Can Walk
Can talk about Java