这代码是直接进入聊天室的，我想新建一个login类用登录窗口进行登录，有哪位会的帮我写一下，万分感谢publicclassClientextendsJFrameimplementsRunnable,ActionListener,WindowListe...

这代码是直接进入聊天室的，我想新建一个login类用登录窗口进行登录，有哪位会的帮我写一下，万分感谢

public class Client extends JFrame implements Runnable,ActionListener,WindowListener{

private Container contentPane;//顶级容器

private JLabel label;//标签，显示名字

private JTextArea msgContext;//显示聊天内容

private MyChoice list;//在线列表

private JTextField msg;//要聊天的信息

private String userName;//用户名

private String title;//客户端标题

private Socket socket;//

private BufferedReader read;//读

private PrintWriter write;//写

private Panel p;//面板

private ScrollPane scroll;//滚动条

public Client(String title,String userName)

{

super(title);

this.userName=userName;

inIt();

go();

}

public void inIt()//初始化

{

try {

socket=new Socket("127.0.0.1",7778);

write=new PrintWriter(new OutputStreamWriter(socket.getOutputStream()),true);

read=new BufferedReader(new InputStreamReader(socket.getInputStream()));

write.println(userName+":上线了");

} catch (Exception e) {

e.printStackTrace();

}

contentPane=getContentPane();

contentPane.setLayout(new BorderLayout());

label=new JLabel(userName);

msgContext=new JTextArea(20,45);

msgContext.setEditable(false);//设置为不可编辑

msg=new JTextField(16);

msg.addActionListener(this);

list=new MyChoice();

p=new Panel();

scroll=new ScrollPane(ScrollPane.SCROLLBARS_ALWAYS);

contentPane.add(label,BorderLayout.NORTH);

p.add(msgContext);

scroll.add(p);

contentPane.add(scroll,BorderLayout.CENTER);

contentPane.add(msg,BorderLayout.SOUTH);

contentPane.add(list,BorderLayout.EAST);

list.addActionListener(this);

this.addWindowListener(this);

setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

setBounds(200, 200, 600, 400);

new Thread(this).start();

}

public void go()//跑起来

{

this.setVisible(true);

this.validate();

}

public static void main(String[] args) {

// TODO Auto-generated method stub

/**

* 注意：客户端不能取相同的名字，否则会出错

*/

Client client=new Client("chat","che");

Client client1=new Client("chat","yan");

Client client2=new Client("chat","bing"); 就把这三个用户改成用登录界面登录的。

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