java写的多线程的简易聊天室

import java.awt.*; import java.awt.event.*; import java.io.IOException; import java.io.*; import java.net.*; public class ChatClient extends Frame{ TextField tf; TextArea taSum; Socket s; //OutputStream os; PrintStream ps; BufferedReader br; String name; public static void main(String[] args) { ChatClient cc=new ChatClient(); // cc.launchFrame(); cc.connect(); cc.launchFrame(); cc.receive(); } public void launchFrame(){ setTitle("聊天室"); setBounds(new Rectangle(200,200,400,200)); setResizable(false); setLayout(new BorderLayout()); tf=new TextField(); taSum=new TextArea("",8,50,TextArea.SCROLLBARS_VERTICAL_ONLY); add(tf,BorderLayout.SOUTH); add(taSum,BorderLayout.NORTH); taSum.setEditable(false); taSum.setBackground(Color.PINK); tf.addActionListener(new tfMonitor()); this.addWindowListener(new WindowAdapter(){ @Override public void windowClosing(WindowEvent arg0) { try { ps.close(); //os.close(); s.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } setVisible(false); System.exit(0); } }); pack(); setVisible(true); } class tfMonitor implements ActionListener { public void actionPerformed(ActionEvent e) { ps.println(name+"说："+tf.getText()); //taSum.append(name+tf.getText()); //taSum.append("\n"); tf.setText(""); } } public void connect(){ try { s=new Socket("SkySmile",6666); System.out.println("服务器连接成功！\n"); //os=s.getOutputStream(); ps=new PrintStream(s.getOutputStream()); br=new BufferedReader(new InputStreamReader(s.getInputStream())); name=s.getLocalAddress().getHostName(); ps.println(name+"上线了！"); } catch (UnknownHostException e) { System.out.println("IP地址错误!"); System.exit(-1); } catch (IOException e) { System.out.println("服务器连接失败!"); System.exit(-1); } } public void receive(){ String str; while(true){ try { str=br.readLine(); if(str==null) break; taSum.append(str+"\n"); } catch (IOException e) { // TODO Auto-generated catch block taSum.append("与服务器断开连接！"); try { br.close(); ps.close(); s.close(); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } } } }