Simple BlueJ program using Scanner class

This is a simple program to demonstrate the use of Scanner class for taking user input

Scanner is a class available in java.util package. The Scanner class is imported to our program using the import statement. This is a simple program to enter three numbers from the console and the sum of the numbers will be displayed. Firstly Scanner class object is created using the statement ‘Scanner input = new Scanner(System.in);’. Constructor of Scanner class takes ‘System.in’ as argument. ‘nextInt ()’ function of Scanner class is used to retrieve values.

  

import java.util.Scanner;

public class Inp

 {

   public static void main(String args[])

    {

          Scanner input = new Scanner(System.in);

          int num1, num2, num3, sum;

          System.out.print(" Enter 1st Number: ");

            num1 = input.nextInt();  

          System.out.print(" Enter 2nd Number: ");

            num2 = input.nextInt();

           System.out.print(" Enter 3rd Number: ");

            num3 = input.nextInt();

           sum = num1 + num2 + num3;

          System.out.println("sum= " + sum);

         }

 }