//:  udpClient0.java 
//   SYNOPSIS:    udpClient0 <hostname>
//   DESCRIPTION: The program creates a datagram socket in the inet 
//                domain, send the message "HI" to udpServer0 running at 
//                <hostanme> at port 12345 and exits
////////////////////////////////////////////////////////////////////////

import java.net.*;
import java.io.*;

public class udpClient0 {
  public static void main(String[] args) 
      throws IOException {
      if (args.length != 1) {
                System.out.println("Usage: java udpClient0  HostName");
                System.exit(0);
                            }
    // Connect to machine provided
    InetAddress addr = InetAddress.getByName(args[0]);

    // Create a udp socket.
    DatagramSocket socket = new DatagramSocket();
    
    // Guard everything in a try-finally to make
    // sure that the socket is closed:
    
    try {
         System.out.println("Sending the udp socket...");
         // Send the Message "HI"   
         socket.send(Dgram.toDatagram("HI",addr,12345)); 
         // or  socket.send(Dgram.toDatagram("HI",addr,udpServer0.INPORT));
    } finally {
        // System.out.println("closing the socket...");
      socket.close();
    }
  }
} ///:~