public class HelloWithArgs {

  public static void main (String [] args) {
    if (args.length == 0) {
    	System.out.println ("Hello!");
    }
    else if (args.length == 1) {
        System.out.println ("Hello, " + args[0] + "!");
    }
    else if (args.length == 2) {
        System.out.println ("Hello, "
          + args[0] + " and " + args[1] + "!");
    }
    else {
        System.out.print ("Hello, ");

        for (int i = 0; i < args.length - 1; i++) {
          System.out.print (args[i] + ", ");          
        }
        System.out.println ("and " + args[args.length - 1] + "!");
    }
  }
}