public class Sum {

  public static void main(String[] args) {
    if (args.length != 2) 
      System.out.println("Fejl: Dette program kræver to argumenter");
    else {
      int x1 = Integer.parseInt(args[0]);
      int x2 = Integer.parseInt(args[1]);
      System.out.println("Summen er " + (x1 + x2));
    }
  }
}