ICQ/即时通讯

开发平台：
Java

ClientPoint.java：源码内容
							//ClientPoint.java
  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;   //端口
      static    String   SERVERADDRESS="127.0.0.1";  // IP地址 
      private   BufferedReader   cin=null;   
      private   PrintWriter   cout=null;   
      private   Socket   client=null;   
      public    String   clientname;  
       //初始化
      private   JPanel   jPanel1=new   JPanel(); 
      private   JPanel   jPanel2=new   JPanel();
      private   JPanel   jPanel3=new   JPanel();
      
      private   JLabel JLabelname=new JLabel("用户名");
      private   JLabel JLabelInfo=new JLabel("请输入信息");
      private   JLabel JLabelPassword=new JLabel("密码");
      
      private   JTextField   jTextSendInfo=new   JTextField(25);
      private   JTextField   jTextname=new   JTextField(10); 
      private   JTextField   jTextPassword=new   JTextField(10);   
      private   JTextArea   jTextGetInfo=new   JTextArea();       
      public    JScrollPane   areaScrollPane=new   JScrollPane(jTextGetInfo);       
      private   Button   Send=new   Button("发送");   
      private   Button   Login=new   Button("登录");   
       // 初始化界面 
      public   ClientPoint(){       
          
          super("聊天室^_^");           
          
          enableEvents(AWTEvent.WINDOW_EVENT_MASK);           
          setSize(480,450);  //设置整个聊天界面
           
          jPanel2.add(JLabelname ); 
          jPanel2.add(jTextname);
          jPanel2.add(JLabelPassword ); 
          jPanel2.add(jTextPassword);
          //按钮Login的设置
          jPanel2.add(Login);
          jPanel2.setBackground(new   Color(75,   234,   166));
          jPanel2.setLayout(new FlowLayout());
          this.getContentPane().add("North",jPanel2);
          //背景和字体的设置
          jTextGetInfo.setBackground(new   Color(122,150,223));   
          jTextGetInfo.setFont(new   java.awt.Font("Dialog",   0,   15));   
          jTextGetInfo.setForeground(new   Color(176,   42,   0));
          //jPanel3.add(jTextGetInfo);
          this.getContentPane().add("Center",jTextGetInfo);  
          this.setResizable(false);
           
          jPanel1.add(JLabelInfo); 
          jPanel1.add(jTextSendInfo); 
          //按钮Send的设置
          jPanel1.add(Send);   
          jPanel1.setBackground(new   Color(75,   234,   166));
          jPanel1.setLayout(new FlowLayout());
          this.getContentPane().add("South",jPanel1);
     
areaScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);   
          areaScrollPane.setAutoscrolls(true);   
          jTextSendInfo.setText("");   
          jPanel1.add("North",areaScrollPane);   
          jTextGetInfo.setEditable(false);   
          //开始监听
          Send.addActionListener(this);   
          jTextSendInfo.addKeyListener(this);   
          Login.addActionListener(new   ActionListener()   
                      {public   void   actionPerformed(ActionEvent   e){   
                      if(!jTextname.getText().equals("")){   
                              clientname=jTextname.getText();   
                              connect();                             
                              Login.setEnabled(false);   
                              Send.setEnabled(true);   
                              jTextname.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);   
      }  
    // 登录进入聊天室
      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);   
          }   
      //主函数  
          public   static   void   main(String[]   args){   
              ClientPoint   cp=new   ClientPoint();   
              cp.show();   
                
          }   
    //与服务器连接 
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);   
  }   
  }   
  }  
//离开聊天室   
  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);   
  }   
  }   
  //处理和监听事件   
  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();                             
  Login.setEnabled(false);   
  Send.setEnabled(true);   
  jTextSendInfo.setText("");   
  }   
  else   
  {   
  cout.println("["+clientname+"]："+jTextSendInfo.getText());   
  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);   
      }   
    }   
  }   
}  

						