聊天系统，实现多人聊天

import java.awt.event.*; import java.io.*; import java.net.Socket; import javax.swing.*; public class Client extends JFrame implements Runnable{ private JPanel jpanel=new JPanel(); private JLabel nameLabel=new JLabel("姓名"); private JTextField nameField=new JTextField(); private JTextArea msgArea=new JTextArea(); private JTextField sendField=new JTextField(); private JScrollPane jScrollPane1=new javax.swing.JScrollPane(); private BufferedReader reader; private PrintWriter writer; private Socket socket; public Client(String title){ super(title); this.setSize(360,340); this.add(jpanel); jpanel.setLayout(null); msgArea.setEditable(false); jpanel.add(nameLabel); nameLabel.setBounds(10,10,60,20); jpanel.add(nameField); nameField.setBounds(60,10,270,21); jpanel.add(sendField); sendField.setBounds(10,270,320,21); msgArea.setColumns(20); msgArea.setRows(5); jScrollPane1.setViewportView(msgArea); jpanel.add(jScrollPane1); jScrollPane1.setBounds(10,40,320,220); sendField.addActionListener(new ActionListener(){ @Override public void actionPerformed(ActionEvent e){ writer.println(nameField.getText()+":"+sendField.getText()); sendField.setText(""); } }); } public static void main(String[] args) { // TODO Auto-generated method stub Client client=new Client("迷你聊天屋"); client.setVisible(true); client.getSocket(); } @Override public void run() { // TODO Auto-generated method stub while(true){ try{ msgArea.append(reader.readLine()+"\n"); }catch(Exception e){ e.printStackTrace(); } } } private void getSocket(){ msgArea.append("尝试与服务器连接"); try{ socket=new Socket("127.0.0.1",1111); msgArea.append("聊天准备完毕"); reader=new BufferedReader(new InputStreamReader(socket.getInputStream())); writer=new PrintWriter(socket.getOutputStream(),true); new Thread(this).start(); }catch(Exception e){ e.printStackTrace(); } } }