udpechoclient.java

利用UDP实现网络聊天室

package udpecho;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: </p>
 * @author unascribed
 * @version 1.0
 */
import java.net.*;
import java.io.*;
public class UDPEchoClient {
  public final static int DEFAULT_PORT=7;
  public static void main(String[] args){
    String hostname="202.205.84.216";
    int port=DEFAULT_PORT;
    if(args.length >0){
      hostname=args[0];
    }
    try{
      InetAddress ia=InetAddress.getByName(hostname);
      SenderThread sender=new SenderThread(ia,DEFAULT_PORT);
      sender.start();
      ReceiverThread receiver=new ReceiverThread(sender.getSocket());
      receiver.start();
    }
    catch(UnknownHostException e){
      System.err.println(e);
    }
    catch(SocketException se){
      System.err.println(se);
    }
  }
}