用JAVA SOCKET制作一个广播信使的程序

用JAVA SOCKET制作一个广播信使的程序(6) import Java.net.*;
import Java.awt.*;
import Java.awt.image.*;
import Java.awt.event.*;
import Javax.swing.*;
import Javax.swing.event.*;

public class ChatClient implements Runnable, WindowListener,
       ActionListener, ListSelectionListener {
   protected String host;
   protected int port;
   public TextArea output;
   protected TextField input;
   String yourname;
   SketchFrame window;

public ChatClient (String host, int port, SketchFrame window) {
    //CONSTRUCTOR INITIALIZING THE ChatClient CLASS
   this.host = host;    //host AND port WILL BE USED TO OPEN THE
                        //SOCKET
   this.port = port;
   this.yourname=JOptionPane.showInputDialog("Enter Login name:");
    //TO CREATE AN INPUT DIALOG BOX

   window.setSize(100,100);    //TO SET THE SIZE OF THE CLIENT
                               //WINDOW