Programs

public class Adder {
  public static void main(String[] args) {
 int numArgs = args.length;

 //this program requires at least two arguments on the command line
    if (numArgs < 2) {
      System.out.println("This program requires two command-line arguments.");
    } else {
   int sum = 0;

   for (int i = 0; i < numArgs; i++) {
        sum += Integer.valueOf(args[i]).intValue();
   }

   //print the sum
      System.out.println(sum);
    }
  }
}