java聊天室【转】

客户端:
import javax.swing.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
import java.awt.*;

public class ClientPoint extends JFrame implements ActionListener,KeyListener{
static int SERVERPORT=8088;
static String SERVERADDRESS="127.0.0.1";
private BufferedReader cin=null;
private PrintWriter cout=null;
private Socket client=null;
public String clientname;
private JPanel jPanel1=new JPanel();
private JTextField jTextSendInfo=new JTextField(38);
private JTextArea jTextGetInfo=new JTextArea(16,33);
public JScrollPane areaScrollPane=new JScrollPane(jTextGetInfo);
private Button Send=new Button("发送");
private Button Link=new Button("连接");

public ClientPoint(){
super("聊天室^_^");
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
setSize(480,465);
jPanel1.add("South",jTextSendInfo);
jPanel1.setBackground(new Color(75, 234, 166));
jTextGetInfo.setBackground(new Color(122,150,223));
jTextGetInfo.setFont(new java.awt.Font("Dialog", 0, 15));
jTextGetInfo.setForeground(new Color(176, 42, 0));
this.setResizable(false);
Send.setBackground(Color.pink);
Send.setForeground(Color.blue);
Send.setBounds(new Rectangle(92, 400, 90, 37));
Link.setBackground(Color.pink);
Link.setForeground(Color.blue);
areaScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
areaScrollPane.setAutoscrolls(true);
jTextSendInfo.setText("");
jPanel1.add("North",areaScrollPane);
jTextGetInfo.setEditable(false);
jPanel1.add("So