public class SumNumbers
1: import java.util.Scanner;
3: /**
4: * A class to sum up numbers provided by the user.
5: *
6: * @author Mark Young (A00000000)
7: */
8: public class SumNumbers {
10: public static final Scanner KBD = new Scanner(System.in);
12: public static void main(String[] args) {
13: int num, sum;
15: // introduce yourself
16: System.out.println("Enter some positive integers below "
17: + "and I'll tell you their sum.");
19: // add up the user input
20: sum = 0;
21: while ((num = KBD.nextInt()) >= 0) {
22: sum += num;
23: }
25: // report result
26: System.out.println("Their sum is " + sum + ".");
27: }
29: }