Java object example, How to create object in java.

Description:

In this example, we will see how to create a object in java. An object is a main feature of object oriented programming concept. It is an instance variable of class or real-world entity. We can declare a object by using new operator. The new operator dynamically allocate memory of object and returns a reference for object.

Here, a ObjectExample class is a supper class of ObjectDemo class. Subclass has main method, and also supper class has a show() method. Which is use for displaying a string "Hello world.". The obDemo is a object of supper class.

Syntax

ClassName object=new ClassName();

ClassName object (Reference of object)

ClassName object=new ClassName(); (allocation)

Code:

ObjectDemo.java

package com.devmanuals;

class ObjectExample {

        public void show() {

                System.out.println("Hello world.");

        }

}

public class ObjectDemo {

        public static void main(String[] arg) {

                ObjectExample obDemo = new ObjectExample();

                obDemo.show();

        }

}

Output:

Hello world.