6 A. Create a package, Add the necessary classes and import the package in java class.

 

Step 1: Define package and create a class

Program:

package data;

public class Demo

{

public void disp()

{System.out.println("Welcome to this class");}

public void square()

{

System.out.println("square of 2 is  :  4" );

}

}

Step 2:  Compile above class by using below command

>javac Demo.java

Step 3: again compile it for creating a directory

>javac -d . Demo.java

Step 4:  use this package inside different class

Program:

import data.Demo;

class AccessPackage

{

public static void main(String args[])

{

Demo d=new Demo();

d.disp();

d.square();

}

}

Step 5: compile and execute it

>javac AccessPackage.java

>java AccessPackage

Output:

Welcome to this class

square of 2 is  :  4