1 package first; 2  3 public class TestArgs { 4  5     public static void main(String[] args) { 6         if (args.length != 2) { 7             System.out.println("Error!"); 8             System.out.println("Length=" + args.length + "they are:"); 9             for (String s : args)10                 System.out.println(s);11         } else {12             for (String s : args)13                 System.out.println(s);14         }15 16     }17 18 }