ios开发友盟统计的简单介绍

急需一个java编程实现的简单聊天窗口代码

import java.awt.*;

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import java.awt.event.*;

import javax.swing.*;

import java.net.*;

import java.io.*;

public class ClientDemo01 {

public static void main(String[] args){

JFrame f=new JFrame("AA");

JPanel p1=new JPanel();

JPanel p2=new JPanel();

JTextArea ta=new JTextArea(15,30);

ta.setEditable(false); //文本域只读

JScrollPane sp=new JScrollPane(ta); //滚动窗格

JTextField tf=new JTextField(20);

JButton b=new JButton("发送");

p1.add(sp);

p2.add(tf);

p2.add(b);

f.add(p1,"Center");

f.add(p2,"South");

f.setBounds(300,300,360,300);

f.setVisible(true);

f.setResizable(false);

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

Socket socket=null;

BufferedInputStream bis=null;

BufferedOutputStream bos=null;

try{

socket=new Socket("192.168.0.4",5000);

bis=new BufferedInputStream(socket.getInputStream());

bos=new BufferedOutputStream(socket.getOutputStream());

MyThread01 mt=new MyThread01(bis,ta);

mt.start();

}catch(Exception e){

e.printStackTrace();

}

b.addActionListener(new ButtonActionListener01(tf,ta,bos));

}

}

class ButtonActionListener01 implements ActionListener{

JTextField tf;

JTextArea ta;

BufferedOutputStream bos;

public ButtonActionListener01(JTextField tf,JTextArea ta,BufferedOutputStream bos){

this.tf=tf;

this.ta=ta;

this.bos=bos;

}

public void actionPerformed(ActionEvent e){

String message=tf.getText();

if(!message.equals("")){

tf.setText(""); //清空文本框

ta.append("AA:"+message+"\n"); //添加到文本域并换行

try{

bos.write(message.getBytes());

bos.flush();

}catch(Exception ex){

System.out.println("发送失败");

}

}

}

}

class MyThread01 extends Thread{

BufferedInputStream bis;

JTextArea ta;

public MyThread01(BufferedInputStream bis,JTextArea ta){

this.bis=bis;

this.ta=ta;

}

public void run(){

try{

while(true){

byte[] b=new byte[100];

int length=bis.read(b);

String message=new String(b,0,length);

ta.append("BB:"+message+"\n");

}

}catch(Exception e){

e.printStackTrace();

}

}

} import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import java.net.*;

import java.io.*;

public class ServerDemo01{

public static void main(String[] args){

JFrame f=new JFrame("BB");

JPanel p1=new JPanel();

JPanel p2=new JPanel();

JTextArea ta=new JTextArea(12,30); //文本域，第一个参数为行数，第二个参数为列数

ta.setEditable(false); //文本域只读

JScrollPane sp=new JScrollPane(ta); //滚动窗格

JTextField tf=new JTextField(20);

JButton b=new JButton("发送");

p1.add(sp);

p2.add(tf);

p2.add(b);

f.add(p1,"Center");

f.add(p2,"South");

f.setBounds(300,300,360,300);

f.setVisible(true);

f.setResizable(false);

f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

ServerSocket server=null;

Socket socket=null;

BufferedInputStream bis=null;

BufferedOutputStream bos=null;

try{

server=new ServerSocket(5000);

//ta.append("等待AA连接...\n");

socket=server.accept();

//ta.append("AA已连接\n");

bis=new BufferedInputStream(socket.getInputStream());

bos=new BufferedOutputStream(socket.getOutputStream());

MyThread1 mt=new MyThread1(bis,ta);

mt.start();

}catch(Exception e){

e.printStackTrace();

}

b.addActionListener(new ButtonActionListener1(tf,ta,bos));

}

}

class ButtonActionListener1 implements ActionListener{

JTextField tf;

JTextArea ta;

BufferedOutputStream bos;

public ButtonActionListener1(JTextField tf,JTextArea ta,BufferedOutputStream bos){

this.tf=tf;

this.ta=ta;

this.bos=bos;

}

public void actionPerformed(ActionEvent e){

String message=tf.getText(); //获取文本框中的内容

if(!message.equals("")){

tf.setText(""); //清空文本框

ta.append("BB:"+message+"\n"); //添加到文本域并换行

try{

bos.write(message.getBytes());

bos.flush();

}catch(Exception ex){

System.out.println("发送失败！");

}

}

}

}

class MyThread1 extends Thread{

BufferedInputStream bis;

JTextArea ta;

public MyThread1(BufferedInputStream bis,JTextArea ta){

this.bis=bis;

this.ta=ta;

}

public void run(){

try{

while(true){

byte[] b=new byte[100];

int length=bis.read(b);

String message=new String(b,0,length);

ta.append("AA:"+message+"\n");

}

}catch(Exception e){

e.printStackTrace();

}

}

}

我要一份用java网络编程写的点对点的两人聊天程序(TCP和UDP)?

Server端：

import java.io.*;

import java.net.*;

import java.applet.Applet;

public class TalkServer{

public static void main(String args[]) {

try{

ServerSocket server=null;

try{

server=new ServerSocket(4700);

}catch(Exception e) {

System.out.println("can not listen to:"+e);

}

Socket socket=null;

try{

socket=server.accept();

}catch(Exception e) {

System.out.println("Error."+e);

}

String line;

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

PrintWriter os=new PrintWriter(socket.getOutputStream());

BufferedReader sin=new BufferedReader(new InputStreamReader(System.in));

System.out.println("Client:"+is.readLine());

line=sin.readLine();

while(!line.equals("bye")){

os.println(line);

os.flush();

System.out.println("Server:"+line);

System.out.println("Client:"+is.readLine());

line=sin.readLine();

}

os.close();

is.close();

socket.close();

server.close();

}catch(Exception e){

System.out.println("Error:"+e);

}

}

}

Client端：

import java.io.*;

import java.net.*;

public class TalkClient {

public static void main(String args[]) {

try{

Socket socket=new Socket("127.0.0.1",4700);

BufferedReader sin=new BufferedReader(new InputStreamReader(System.in));

PrintWriter os=new PrintWriter(socket.getOutputStream());

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

String readline;

readline=sin.readLine(); //从系统标准输入读入一字符串

while(!readline.equals("bye")){

os.println(readline);

os.flush();

System.out.println("Client:"+readline);

System.out.println("Server:"+is.readLine());

readline=sin.readLine(); //从系统标准输入读入一字符串

}

os.close(); //关闭Socket输出流

is.close(); //关闭Socket输入流

socket.close(); //关闭Socket

}catch(Exception e) {

System.out.println("Error"+e); //出错，则打印出错信息

}

}

}

在java里编写聊天软件的图像界面代码怎么写

如果你问的是怎么写界面的代码，那么 如果不需要太复杂 这样就可以：

JFrame frame = new JFrame(name);//窗口

JTextField jtf; // 文本条

JTextArea jta; //文本域。

frame.setSize(400, 300); //大小

jta = new JTextArea(); //文本域

jta.setEditable(false); //不可编辑

jtf = new JTextField();//文件条

如果你问的是整个程序的代码 那就先把分加到100吧 而且就算100估计也没人会来给你写

因为很麻烦的

java 聊天室 源代码

【ClientSocketDemo.java 客户端Java源代码】

import java.net.*;

import java.io.*;

public class ClientSocketDemo

{

//声明客户端Socket对象socket

Socket socket = null;

//声明客户器端数据输入输出流

DataInputStream in;

DataOutputStream out;

//声明字符串数组对象response，用于存储从服务器接收到的信息

String response[];

//执行过程中，没有参数时的构造方法，本地服务器在本地，取默认端口10745

public ClientSocketDemo()

{

try

{

//创建客户端socket，服务器地址取本地，端口号为10745

socket = new Socket("localhost",10745);

//创建客户端数据输入输出流，用于对服务器端发送或接收数据

in = new DataInputStream(socket.getInputStream());

out = new DataOutputStream(socket.getOutputStream());

//获取客户端地址及端口号

String ip = String.valueOf(socket.getLocalAddress());

String port = String.valueOf(socket.getLocalPort());

//向服务器发送数据

out.writeUTF("Hello Server.This connection is from client.");

out.writeUTF(ip);

out.writeUTF(port);

//从服务器接收数据

response = new String[3];

for (int i = 0; i response.length; i++)

{

response[i] = in.readUTF();

System.out.println(response[i]);

}

}

catch(UnknownHostException e){e.printStackTrace();}

catch(IOException e){e.printStackTrace();}

}

//执行过程中，有一个参数时的构造方法，参数指定服务器地址，取默认端口10745

public ClientSocketDemo(String hostname)

{

try

{

//创建客户端socket，hostname参数指定服务器地址，端口号为10745

socket = new Socket(hostname,10745);

in = new DataInputStream(socket.getInputStream());

out = new DataOutputStream(socket.getOutputStream());

String ip = String.valueOf(socket.getLocalAddress());

String port = String.valueOf(socket.getLocalPort());

out.writeUTF("Hello Server.This connection is from client.");

out.writeUTF(ip);

out.writeUTF(port);

response = new String[3];

for (int i = 0; i response.length; i++)

{

response[i] = in.readUTF();

System.out.println(response[i]);

}

}

catch(UnknownHostException e){e.printStackTrace();}

catch(IOException e){e.printStackTrace();}

}

//执行过程中，有两个个参数时的构造方法，第一个参数hostname指定服务器地址

//第一个参数serverPort指定服务器端口号

public ClientSocketDemo(String hostname,String serverPort)

{

try

{

socket = new Socket(hostname,Integer.parseInt(serverPort));

in = new DataInputStream(socket.getInputStream());

out = new DataOutputStream(socket.getOutputStream());

String ip = String.valueOf(socket.getLocalAddress());

String port = String.valueOf(socket.getLocalPort());

out.writeUTF("Hello Server.This connection is from client.");

out.writeUTF(ip);

out.writeUTF(port);

response = new String[3];

for (int i = 0; i response.length; i++)

{

response[i] = in.readUTF();

System.out.println(response[i]);

}

}

catch(UnknownHostException e){e.printStackTrace();}

catch(IOException e){e.printStackTrace();}

}

public static void main(String[] args)

{

String comd[] = args;

if(comd.length == 0)

{

System.out.println("Use localhost(127.0.0.1) and default port");

ClientSocketDemo demo = new ClientSocketDemo();

}

else if(comd.length == 1)

{

System.out.println("Use default port");

ClientSocketDemo demo = new ClientSocketDemo(args[0]);

}

else if(comd.length == 2)

{

System.out.println("Hostname and port are named by user");

ClientSocketDemo demo = new ClientSocketDemo(args[0],args[1]);

}

else System.out.println("ERROR");

}

}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

【ServerSocketDemo.java 服务器端Java源代码】

import java.net.*;

import java.io.*;

public class ServerSocketDemo

{

//声明ServerSocket类对象

ServerSocket serverSocket;

//声明并初始化服务器端监听端口号常量

public static final int PORT = 10745;

//声明服务器端数据输入输出流

DataInputStream in;

DataOutputStream out;

//声明InetAddress类对象ip，用于获取服务器地址及端口号等信息

InetAddress ip = null;

//声明字符串数组对象request，用于存储从客户端发送来的信息

String request[];

public ServerSocketDemo()

{

request = new String[3]; //初始化字符串数组

try

{

//获取本地服务器地址信息

ip = InetAddress.getLocalHost();

//以PORT为服务端口号，创建serverSocket对象以监听该端口上的连接

serverSocket = new ServerSocket(PORT);

//创建Socket类的对象socket，用于保存连接到服务器的客户端socket对象

Socket socket = serverSocket.accept();

System.out.println("This is server:"+String.valueOf(ip)+PORT);

//创建服务器端数据输入输出流，用于对客户端接收或发送数据

in = new DataInputStream(socket.getInputStream());

out = new DataOutputStream(socket.getOutputStream());

//接收客户端发送来的数据信息，并显示

request[0] = in.readUTF();

request[1] = in.readUTF();

request[2] = in.readUTF();

System.out.println("Received messages form client is:");

System.out.println(request[0]);

System.out.println(request[1]);

System.out.println(request[2]);

//向客户端发送数据

out.writeUTF("Hello client!");

out.writeUTF("Your ip is:"+request[1]);

out.writeUTF("Your port is:"+request[2]);

}

catch(IOException e){e.printStackTrace();}

}

public static void main(String[] args)

{

ServerSocketDemo demo = new ServerSocketDemo();

}

}

用JAVA 编写简单网络聊天程序

/**

* 基于UDP协议的聊天程序

*

* 2007.9.18

* */

//导入包

import java.awt.*;

import java.awt.event.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.*;

import java.net.*;

public class Chat extends JFrame implements ActionListener

{

//广播地址或者对方的地址

public static final String sendIP = "172.18.8.255";

//发送端口9527

public static final int sendPort = 9527;

JPanel p = new JPanel();

List lst = new List(); //消息显示

JTextField txtIP = new JTextField(18); //填写IP地址

JTextField txtMSG = new JTextField(20); //填写发送消息

JLabel lblIP = new JLabel("IP地址:");

JLabel lblMSG = new JLabel("消息:");

JButton btnSend = new JButton("发送");

byte [] buf;

//定义DatagramSocket的对象必须进行异常处理

//发送和接收数据报包的套接字

DatagramSocket ds = null;

//=============构造函数=====================

public Chat()

{

CreateInterFace();

//注册消息框监听器

txtMSG.addActionListener(this);

btnSend.addActionListener(this);

try

{

//端口:9527

ds =new DatagramSocket(sendPort);

}

catch(Exception ex)

{

ex.printStackTrace();

}

//============接受消息============

//匿名类

new Thread(new Runnable()

{

public void run()

{

byte buf[] = new byte[1024];

//表示接受数据报包

while(true)

{

try

{

DatagramPacket dp = new DatagramPacket(buf,1024,InetAddress.getByName(txtIP.getText()),sendPort);

ds.receive(dp);

lst.add("【消息来自】◆" + dp.getAddress().getHostAddress() + "◆"+"【说】:" + new String (buf,0,dp.getLength()) /*+ dp.getPort()*/,0);

}

catch(Exception e)

{

if(ds.isClosed())

{

e.printStackTrace();

}

}

}

}

}).start();

//关闭窗体事件

this.addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent w)

{

System.out.println("test");

int n=JOptionPane.showConfirmDialog(null,"是否要退出?","退出",JOptionPane.YES_NO_OPTION);

if(n==JOptionPane.YES_OPTION)

{

dispose();

System.exit(0);

ds.close();//关闭ds对象//关闭数据报套接字

}

}

});

}

//界面设计布局

public void CreateInterFace()

{

this.add(lst,BorderLayout.CENTER);

this.add(p,BorderLayout.SOUTH);

p.add(lblIP);

p.add(txtIP);

p.add(lblMSG);

p.add(txtMSG);

p.add(btnSend);

txtIP.setText(sendIP);

//背景颜色

lst.setBackground(Color.yellow);

//JAVA默认风格

this.setUndecorated(true);

this.getRootPane().setWindowDecorationStyle(JRootPane.FRAME);

this.setSize(600,500);

this.setTitle("〓聊天室〓");

this.setResizable(false);//不能改变窗体大小

this.setLocationRelativeTo(null);//窗体居中

this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

this.setVisible(true);

txtMSG.requestFocus();//消息框得到焦点

}

//===============================Main函数===============================

public static void main(String[]args)

{

new Chat();

}

//================================发送消息===============================

//消息框回车发送消息事件

public void actionPerformed(ActionEvent e)

{

//得到文本内容

buf = txtMSG.getText().getBytes();

//判断消息框是否为空

if (txtMSG.getText().length()==0)

{

JOptionPane.showMessageDialog(null,"发送消息不能为空","提示",JOptionPane.WARNING_MESSAGE);

}

else{

try

{

InetAddress address = InetAddress.getByName(sendIP);

DatagramPacket dp = new DatagramPacket(buf,buf.length,InetAddress.getByName(txtIP.getText()),sendPort);

ds.send(dp);

}

catch(Exception ex)

{

ex.printStackTrace();

}

}

txtMSG.setText("");//清空消息框

//点发送按钮发送消息事件

if(e.getSource()==btnSend)

{

buf = txtMSG.getText().getBytes();

try

{

DatagramPacket dp = new DatagramPacket(buf,buf.length,InetAddress.getByName(txtIP.getText()),sendPort);

}

catch(Exception ex)

{

ex.printStackTrace();

}

txtMSG.setText("");//清空消息框

txtMSG.requestFocus();

}

}

}

求java网络聊天室（B/S模式)程序代码

共四个java文件，源代码如下：

import java.awt.*;

import java.net.*;

import java.awt.event.*;

import java.io.*;

import java.util.Hashtable;

public class ChatArea extends Panel implements ActionListener,Runnable

{

Socket socket=null;

DataInputStream in=null;

DataOutputStream out=null;

Thread threadMessage=null;

TextArea 谈话显示区,私聊显示区=null;

TextField 送出信息=null;

Button 确定,刷新谈话区,刷新私聊区;

Label 提示条=null;

String name=null;

Hashtable listTable;

List listComponent=null;

Choice privateChatList;

int width,height;

public ChatArea(String name,Hashtable listTable,int width,int height)

{

setLayout(null);

setBackground(Color.orange);

this.width=width;

this.height=height;

setSize(width,height);

this.listTable=listTable;

this.name=name;

threadMessage=new Thread(this);

谈话显示区=new TextArea(10,10);

私聊显示区=new TextArea(10,10);

确定=new Button("送出信息到:");

刷新谈话区=new Button("刷新谈话区");

刷新私聊区=new Button("刷新私聊区");

提示条=new Label("双击聊天者可私聊",Label.CENTER);

送出信息=new TextField(28);

确定.addActionListener(this);

送出信息.addActionListener(this);

刷新谈话区.addActionListener(this);

刷新私聊区.addActionListener(this);

listComponent=new List();

listComponent.addActionListener(this);

privateChatList=new Choice();

privateChatList.add("大家(*)");

privateChatList.select(0);

add(谈话显示区);

谈话显示区.setBounds(10,10,(width-120)/2,(height-120));

add(私聊显示区);

私聊显示区.setBounds(10+(width-120)/2,10,(width-120)/2,(height-120));

add(listComponent);

listComponent.setBounds(10+(width-120),10,100,(height-160));

add(提示条);

提示条.setBounds(10+(width-120),10+(height-160),110,40);

Panel pSouth=new Panel();

pSouth.add(送出信息);

pSouth.add(确定);

pSouth.add(privateChatList);

pSouth.add(刷新谈话区);

pSouth.add(刷新私聊区);

add(pSouth);

pSouth.setBounds(10,20+(height-120),width-20,60);

}

public void setName(String s)

{

name=s;

}

public void setSocketConnection(Socket socket,DataInputStream in,DataOutputStream out)

{

this.socket=socket;

this.in=in;

this.out=out;

try

{

threadMessage.start();

}

catch(Exception e)

{

}

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==确定||e.getSource()==送出信息)

{

String message="";

String people=privateChatList.getSelectedItem();

people=people.substring(0,people.indexOf("("));

message=送出信息.getText();

if(message.length()0)

{

try {

if(people.equals("大家"))

{

out.writeUTF("公共聊天内容:"+name+"说:"+message);

}

else

{

out.writeUTF("私人聊天内容:"+name+"悄悄地说:"+message+"#"+people);

}

}

catch(IOException event)

{

}

}

}

else if(e.getSource()==listComponent)

{

privateChatList.insert(listComponent.getSelectedItem(),0);

privateChatList.repaint();

}

else if(e.getSource()==刷新谈话区)

{

谈话显示区.setText(null);

}

else if(e.getSource()==刷新私聊区)

{

私聊显示区.setText(null);

}

}

public void run()

{

while(true)

{

String s=null;

try

{

s=in.readUTF();

if(s.startsWith("聊天内容:"))

{

String content=s.substring(s.indexOf(":")+1);

谈话显示区.append("\n"+content);

}

if(s.startsWith("私人聊天内容:"))

{

String content=s.substring(s.indexOf(":")+1);

私聊显示区.append("\n"+content);

}

else if(s.startsWith("聊天者:"))

{

String people=s.substring(s.indexOf(":")+1,s.indexOf("性别"));

String sex=s.substring(s.indexOf("性别")+2);

listTable.put(people,people+"("+sex+")");

listComponent.add((String)listTable.get(people));

listComponent.repaint();

}

else if(s.startsWith("用户离线:"))

{

String awayPeopleName=s.substring(s.indexOf(":")+1);

listComponent.remove((String)listTable.get(awayPeopleName));

listComponent.repaint();

谈话显示区.append("\n"+(String)listTable.get(awayPeopleName)+"离线");

listTable.remove(awayPeopleName);

}

Thread.sleep(5);

}

catch(IOException e)

{

listComponent.removeAll();

listComponent.repaint();

listTable.clear();

谈话显示区.setText("和服务器的连接已中断\n必须刷新浏览器才能再次聊天");

break;

}

catch(InterruptedException e)

{

}

}

}

}

ChatServer.java

import java.io.*;

import java.net.*;

import java.util.*;

public class ChatServer

{

public static void main(String args[])

{

ServerSocket server=null;

Socket you=null;

Hashtable peopleList;

peopleList=new Hashtable();

while(true)

{

try

{

server=new ServerSocket(6666);

}

catch(IOException e1)

{

System.out.println("正在监听");

}

try {

you=server.accept();

InetAddress address=you.getInetAddress();

System.out.println("用户的IP:"+address);

}

catch (IOException e)

{

}

if(you!=null)

{

Server_thread peopleThread=new Server_thread(you,peopleList);

peopleThread.start();

}

else {

continue;

}

}

}

}

class Server_thread extends Thread

{

String name=null,sex=null;

Socket socket=null;

File file=null;

DataOutputStream out=null;

DataInputStream in=null;

Hashtable peopleList=null;

Server_thread(Socket t,Hashtable list)

{

peopleList=list;

socket=t;

try {

in=new DataInputStream(socket.getInputStream());

out=new DataOutputStream(socket.getOutputStream());

}

catch (IOException e)

{

}

}

public void run()

{

while(true)

{ String s=null;

try

{

s=in.readUTF();

if(s.startsWith("姓名:"))

{

name=s.substring(s.indexOf(":")+1,s.indexOf("性别"));

sex=s.substring(s.lastIndexOf(":")+1);

boolean boo=peopleList.containsKey(name);

if(boo==false)

{

peopleList.put(name,this);

out.writeUTF("可以聊天:");

Enumeration enum=peopleList.elements();

while(enum.hasMoreElements())

{

Server_thread th=(Server_thread)enum.nextElement();

th.out.writeUTF("聊天者:"+name+"性别"+sex);

if(th!=this)

{

out.writeUTF("聊天者:"+th.name+"性别"+th.sex);

}

}

}

else

{

out.writeUTF("不可以聊天:");

}

}

else if(s.startsWith("公共聊天内容:"))

{

String message=s.substring(s.indexOf(":")+1);

Enumeration enum=peopleList.elements();

while(enum.hasMoreElements())

{

((Server_thread)enum.nextElement()).out.writeUTF("聊天内容:"+message);

}

}

else if(s.startsWith("用户离开:"))

{

Enumeration enum=peopleList.elements();

while(enum.hasMoreElements())

{ try

{

Server_thread th=(Server_thread)enum.nextElement();

if(th!=thisth.isAlive())

{

th.out.writeUTF("用户离线:"+name);

}

}

catch(IOException eee)

{

}

}

peopleList.remove(name);

socket.close();

System.out.println(name+"用户离开了");

break;

}

else if(s.startsWith("私人聊天内容:"))

{

String 悄悄话=s.substring(s.indexOf(":")+1,s.indexOf("#"));

String toPeople=s.substring(s.indexOf("#")+1);

Server_thread toThread=(Server_thread)peopleList.get(toPeople);

if(toThread!=null)

{

toThread.out.writeUTF("私人聊天内容:"+悄悄话);

}

else

{

out.writeUTF("私人聊天内容:"+toPeople+"已经离线");

}

}

}

catch(IOException ee)

{

Enumeration enum=peopleList.elements();

while(enum.hasMoreElements())

{ try

{

Server_thread th=(Server_thread)enum.nextElement();

if(th!=thisth.isAlive())

{

th.out.writeUTF("用户离线:"+name);

}

}

catch(IOException eee)

{

}

}

peopleList.remove(name);

try

{

socket.close();

}

catch(IOException eee)

{

}

System.out.println(name+"用户离开了");

break;

}

}

}

}

import java.awt.*;

import java.io.*;

import java.net.*;

import java.applet.*;

import java.util.Hashtable;

ClientChat.java

public class ClientChat extends Applet implements Runnable

{

Socket socket=null;

DataInputStream in=null;

DataOutputStream out=null;

InputNameTextField 用户提交昵称界面=null;

ChatArea 用户聊天界面=null;

Hashtable listTable;

Label 提示条;

Panel north, center;

Thread thread;

public void init()

{

int width=getSize().width;

int height=getSize().height;

listTable=new Hashtable();

setLayout(new BorderLayout());

用户提交昵称界面=new InputNameTextField(listTable);

int h=用户提交昵称界面.getSize().height;

用户聊天界面=new ChatArea("",listTable,width,height-(h+5));

用户聊天界面.setVisible(false);

提示条=new Label("正在连接到服务器,请稍等...",Label.CENTER);

提示条.setForeground(Color.red);

north=new Panel(new FlowLayout(FlowLayout.LEFT));

center=new Panel();

north.add(用户提交昵称界面);

north.add(提示条);

center.add(用户聊天界面);

add(north,BorderLayout.NORTH);

add(center,BorderLayout.CENTER);

validate();

}

public void start()

{

if(socket!=nullin!=nullout!=null)

{ try

{

socket.close();

in.close();

out.close();

用户聊天界面.setVisible(false);

}

catch(Exception ee)

{

}

}

try

{

socket = new Socket(this.getCodeBase().getHost(), 6666);

in=new DataInputStream(socket.getInputStream());

out=new DataOutputStream(socket.getOutputStream());

}

catch (IOException ee)

{

提示条.setText("连接失败");

}

if(socket!=null)

{

InetAddress address=socket.getInetAddress();

提示条.setText("连接:"+address+"成功");

用户提交昵称界面.setSocketConnection(socket,in,out);

north.validate();

}

if(thread==null)

{

thread=new Thread(this);

thread.start();

}

}

public void stop()

{

try

{

socket.close();

thread=null;

}

catch(IOException e)

{

this.showStatus(e.toString());

}

}

public void run()

{

while(thread!=null)

{

if(用户提交昵称界面.get能否聊天()==true)

{

用户聊天界面.setVisible(true);

用户聊天界面.setName(用户提交昵称界面.getName());

用户聊天界面.setSocketConnection(socket,in,out);

提示条.setText("祝聊天愉快!");

center.validate();

break;

}

try

{

Thread.sleep(100);

}

catch(Exception e)

{

}

}

}

}

InputNameTextField。java

import java.awt.*;

import java.net.*;

import java.awt.event.*;

import java.io.*;

import java.util.Hashtable;

public class InputNameTextField extends Panel implements ActionListener,Runnable

{

TextField nameFile=null;

String name=null;

Checkbox male=null,female=null;

CheckboxGroup group=null;

Button 进入聊天室=null,退出聊天室=null;

Socket socket=null;

DataInputStream in=null;

DataOutputStream out=null;

Thread thread=null;

boolean 能否聊天=false;

Hashtable listTable;

public InputNameTextField(Hashtable listTable)

{

this.listTable=listTable;

nameFile=new TextField(10);

group=new CheckboxGroup();

male=new Checkbox("男",true,group);

female=new Checkbox("女",false,group);

进入聊天室=new Button("进入");

退出聊天室=new Button("退出");

进入聊天室.addActionListener(this);

退出聊天室.addActionListener(this);

thread=new Thread(this);

add(new Label("昵称:"));

add(nameFile);

add(male);

add(female);

add(进入聊天室);

add(退出聊天室);

退出聊天室.setEnabled(false);

}

public void set能否聊天(boolean b)

{

能否聊天=b;

}

public boolean get能否聊天()

{

return 能否聊天;

}

public String getName()

{

return name;

}

public void setName(String s)

{

name=s;

}

public void setSocketConnection(Socket socket,DataInputStream in,DataOutputStream out)

{

this.socket=socket;

this.in=in;

this.out=out;

try{

thread.start();

}

catch(Exception e)

{

nameFile.setText(""+e);

}

}

public Socket getSocket()

{

return socket;

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==进入聊天室)

{

退出聊天室.setEnabled(true);

if(能否聊天==true)

{

nameFile.setText("您正在聊天:"+name);

}

else

{

this.setName(nameFile.getText());

String sex=group.getSelectedCheckbox().getLabel();

if(socket!=nullname!=null)

{

try{

out.writeUTF("姓名:"+name+"性别:"+sex);

}

catch(IOException ee)

{

nameFile.setText("没有连通服务器"+ee);

}

}

}

}

if(e.getSource()==退出聊天室)

{

try

{

out.writeUTF("用户离开:");

}

catch(IOException ee)

{

}

}

}

public void run()

{

String message=null;

while(true)

{

if(in!=null)

{

try

{

message=in.readUTF();

}

catch(IOException e)

{

nameFile.setText("和服务器断开"+e);

}

}

if(message.startsWith("可以聊天:"))

{

能否聊天=true;

break;

}

else if(message.startsWith("聊天者:"))

{

String people=message.substring(message.indexOf(":")+1);

listTable.put(people,people);

}

else if(message.startsWith("不可以聊天:"))

{

能否聊天=false;

nameFile.setText("该昵称已被占用");

}

}

}

}