Wednesday, 19 August 2015

Java Tutorial : Inheritance Example Child Parent

Mastering Java Inheritance: Child and Parent Classes

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The Basics of Child and Parent Classes

In Java, Inheritance is a mechanism where one class acquires the properties and behaviors of another. We call the existing class the Parent Class (or Superclass) and the new class the Child Class (or Subclass).

How the Relationship Works

The magic happens with the extends keyword. When a Child class extends a Parent class:

The Child class inherits all properties (fields) of the Parent.
The Child class inherits all methods (behaviors) of the Parent.
The Child can also have its own unique properties and methods!

Accessing Parent Members

Because of this relationship, if you create an object of the Child class, you can use that single object to call methods from both the Child class and the Parent class. This is the core of code reusability in Java.

Key Takeaway

Inheritance simplifies your code by allowing you to define common behavior in a Parent class and specific behavior in Child classes. It establishes a clear "IS-A" relationship, making your programs easier to manage and understand.

Watch More Java Tutorials

Check out these related lessons from my channel to master Java inheritance:

Click here to watch in Youtube :
https://www.youtube.com/watch?v=CNi365Zhqso&list=UUhwKlOVR041tngjerWxVccw

Click the below Image to Enlarge

Java Tutorial : Inheritance Example Child Parent

Child.java

class Parent
{
    String parentProperty = "Property of Parent";

    public void parentMethod()
    {
        System.out.println("Parent method");
    }
}

public class Child extends Parent
{
    String childProperty = "Property of Child";

    public void childMethod()
    {
        System.out.println("Child method");
    }

    public static void main(String[] args)
    {
        Child childObject = new Child();

        /*
         * Using child Object we can access child properties and parent
         * properties because Child class extends Parent Class.
         */
        System.out.println(childObject.childProperty);
        System.out.println(childObject.parentProperty);

        /*
         * Using child Object we can access child methods and parent methods
         * because Child class extends Parent Class.
         */

        childObject.childMethod();
        childObject.parentMethod();

    }
}

Output

Property of Child
Property of Parent
Child method
Parent method

To Download InheritanceDemoChildParent Project Click the below link
https://sites.google.com/site/javaee4321/java/InheritanceDemoChildParent.zip?attredirects=0&d=1

See also:

All JavaEE Viedos Playlist

All JavaEE Viedos

All JAVA EE Links

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java Collection Framework Tutorial

JAVA Tutorial

Wednesday, 19 August 2015

Java Tutorial : Inheritance Example Child Parent

Mastering Java Inheritance: Child and Parent Classes

The Basics of Child and Parent Classes

How the Relationship Works

Accessing Parent Members

Key Takeaway

Watch More Java Tutorials

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