有高手可以帮忙写一写客户端的注释吗?
import javax.swing.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
import java.awt.*;
class ClientPoint extends JFrame implements ActionListener,KeyListener{
static int SERVERPORT=8088; //还是这里不明白
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); //不知道?
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( "South ",Send);
Send.setEnabled(false);
jPanel1.add( "South ",Link);
Send.addActionListener(this);
jTextSendInfo.addKeyListener(this);
Link.addActionListener(new ActionListener()
{public void actionPerformed(ActionEvent e){
if(!jTextSendInfo.getText().equals( " ")){
clientname=jTextSendInfo.getText();
connect();
Link.setEnabled(false);
Send.setEnabled(true);
jTextSendInfo.setText( " ");
}
else JOptionPane.showMessageDialog(null, "警告：用户名不能为空！！ ", "消息对话框 ",JOptionPane.WARNING_MESSAGE);
}});
this.setContentPane(jPanel1);
}
public void connect(){
try{
client=new Socket(SERVERADDRESS,SERVERPORT);
cout=new PrintWriter(client.getOutputStream());
cin=new BufferedReader(
new InputStreamReader(client.getInputStream()));
cout.println( "欢迎[ "+clientname+ "]进入聊天室 ");
cout.flush();
Receiver r=new Receiver();
r.start();
}catch(Exception e){
e.printStackTrace();
}
}
protected void processWindowEvent(WindowEvent e){
if(e.getID()==WindowEvent.WINDOW_CLOSING){
quit();
}
super.processWindowEvent(e);
}
public static void main(String[] args){
ClientPoint cp=new ClientPoint();
cp.show();
}
class Receiver extends Thread{
public void run(){
String msg=null;
JScrollBar sb;
try{
msg=cin.readLine();
while(true){
jTextGetInfo.append(msg+ "\n ");
sb=areaScrollPane.getVerticalScrollBar();
sb.setValue(sb.getMaximum()+50);
jTextSendInfo.setEnabled(true);
msg=cin.readLine();
}
}catch(Exception e){
Send.setEnabled(false);
}
}
}
void quit(){
try{
cout.println( "[ "+clientname+ "]离开聊天室 ");
cout.flush();
cout.println( "exit ");
cout.flush();
System.out.print( "lianjieduankai ");
cin.close();
cout.close();
client.close();
}catch(Exception e){}
finally{System.exit(0);
}
}
public void actionPerformed(ActionEvent e){
if(!jTextSendInfo.getText().equals( " ")){
cout.println( "[ "+clientname+ "]： "+jTextSendInfo.getText());
cout.flush();
jTextSendInfo.setText( " ");
jTextSendInfo.setFocusable(true);
}
else JOptionPane.showMessageDialog(null, "警告：消息不能为空！！ ", "消息对话框 ",JOptionPane.WARNING_MESSAGE);
}
public void keyPressed(KeyEvent e){}
public void keyTyped(KeyEvent e){}
public void keyReleased(KeyEvent e)
{
if (e.getKeyCode()==KeyEvent.VK_ENTER)
{
if(!jTextSendInfo.getText().equals( " "))
{
if(cout==null)
{
clientname=jTextSendInfo.getText();
connect();
Link.setEnabled(false);
Send.setEnabled(true);
jTextSendInfo.setText( " ");
}
else
{
cout.println( "[ "+clientname+ "]： "+jTextSendInfo.getText()); //不明白
cout.flush();
jTextSendInfo.setText( " ");
jTextSendInfo.setFocusable(true);
}
}
else
{
if (cout==null)
{
JOptionPane.showMessageDialog(null, "警告：用户名不能为空！！ ", "消息对话框 ",JOptionPane.WARNING_MESSAGE);
}
else JOptionPane.showMessageDialog(null, "警告：消息不能为空！！ ", "消息对话框 ",JOptionPane.WARNING_MESSAGE);
}
}
}
}
[解决办法]
jTextSendInfo.getText()键盘敲入字符是什么就取什么。
