public static void main(String[] args)
  {
    jlap test = new jlap();
    if (args.length != 1)
    {
      test.showUsage();
      System.exit(0);
    }
    else
    {
      try
      {
        test.play(args[0]);
      }
      catch (Exception ex)
      {
        System.err.println(ex.getMessage());
        System.exit(0);
      }
    }
  }