Java Program To Input a Number and Display Its Square

/*
 This is Java Program to input
 a number from user through keyboard
and display its square.
 */
package numsquare;
/**
  * @author www.EasycodeBook.com
 */
// step 1 for keyboard input -
// import Scanner class
import java.util.Scanner;
public class NumSquare {
   public static void main(String[] args) {
       int num, square;
       // step 2 for keyboard input
       // create an object let "keyboard" of Scanner class
       // by passing it System.in (standard system input device)
       Scanner keyboard = new Scanner(System.in);
       //Step 3
       // Show message to enter data
       System.out.print("Enter a number to calculate square=");
        //Step 4 for keyboard input
       // call nextInt() method to initiate integer input
       num = keyboard.nextInt();
       square = num * num;
       System.out.print("Square = " + square);
             
    }
    
}

package numsquare;
import java.util.Scanner;
public class NumSquare {
   public static void main(String[] args) {
       int num, square;
       Scanner keyboard = new Scanner(System.in);
       System.out.print("Enter a number to calculate square=");
 
       num = keyboard.nextInt();
       square = num * num;
       System.out.print("Square = " + square);
             
    }
    
}