Java - adding value in a while loop

Question

this one just is hurting my brain. http://programmingbydoing.com/a/adding-values-in-a-loop.html

Write a program that gets several integers from the user.

Answer 1

The code will be as below :

 public static void main(String[] args) throws Exception {
     Scanner keyboard = new Scanner(System.in);
     int input = 0;
     int total = 0;
     System.out.println("Start entering the number");
     while((input=keyboard.nextInt()) != 0)
         {   
             total = input + total;
         }
    System.out.println("The program exist because 0 is entered and sum is "+total);
}