java基于C/S模式实现聊天程序（客户端）

package client;

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
import java.util.*;

import javax.swing.*;

public class Client extends JFrame {

 Socket clientsocket = null;
 DataInputStream in = null;
 DataOutputStream out = null;
 JTextArea inputText;
 String SerAddress = "192.168.1.100";
 int SendPort = 8888;
 JTextField NickName;
 JTextArea textShow;
 JButton button, setbutton;

 public Client() { // 构造函数，创建一个布局并初始化
 init();
 setVisible(true);
 setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
 setBounds(480, 160, 340, 460);
 setTitle("好好学习天天向上聊天室");
 setResizable(false);

 }

 void init() { // 初始化函数，设置布局并且设置监视器

 inputText = new JTextArea(4, 29);

 button = new JButton("  发送  ");
 JLabel label = new JLabel("昵称");
 setbutton = new JButton("  登录  ");
 textShow = new JTextArea(15, 29);
 textShow.setEditable(false);
 NickName = new JTextField(10);
 inputText.setBackground(new Color(45, 210, 209));
 setLayout(new FlowLayout());
 getContentPane().setBackground(new Color(20, 85, 237));
 add(new JScrollPane(textShow));
 textShow.setBackground(new Color(45, 210, 209));
 setbutton.setBackground(new Color(236, 134, 21));
 button.setBackground(new Color(236, 134, 21));
 NickName.setBackground(new Color(45, 210, 209));
 label.setForeground(new Color(243, 243, 14));
 add(label);
 add(NickName);
 add(setbutton);
 add(new JScrollPane(inputText));
 add(button);
 setbutton.addActionListener(new ActionListener() {  //添加监视器
  public void actionPerformed(ActionEvent e) {

  Thread readData;
  Read read = null;
  try {
   clientsocket = new Socket();
   read = new Read();
   readData = new Thread(read);
   if (clientsocket.isConnected()) {

   } else {
   InetAddress address = InetAddress.getByName(SerAddress);
   InetSocketAddress socketAddress = new InetSocketAddress(
    address, SendPort);
   clientsocket.connect(socketAddress);
   textShow.append(new java.text.SimpleDateFormat(
    "yy-MM-dd HH:mm:ss").format(new Date())
    + "\n与服务器连接成功\n已登录聊天室\n");
   in = new DataInputStream(clientsocket.getInputStream());
   out = new DataOutputStream(clientsocket
    .getOutputStream());
   read.setDataInputStream(in);
   readData.start();
   }
  } catch (Exception e1) {
   textShow.append(new java.text.SimpleDateFormat(
    "yy-MM-dd HH:mm:ss").format(new Date())
    + "\n服务器连接失败\n");
  }

  }
 });

 button.addActionListener(new ActionListener() {
  public void actionPerformed(ActionEvent e) {
  Send send = new Send();
  Thread sendData = new Thread(send);
  send.setDataOutputStream(out);
  sendData.start();

  }

 });
 addWindowListener(new WindowAdapter() {  //响应关闭按钮的功能
  public void windowClosing(WindowEvent e) {
  int option = JOptionPane
   .showConfirmDialog(null, "亲爱的你真的要离开聊天室么？",
    " 好好学习，天天向上", JOptionPane.YES_NO_OPTION,
    JOptionPane.QUESTION_MESSAGE);
  if (option == JOptionPane.YES_OPTION)
   System.exit(0);
  }
 });
 } // init结束

 class Read implements Runnable {  //读取输入流的线程
 DataInputStream in;

 public void setDataInputStream(DataInputStream in) {
  this.in = in;
 }

 public void run() {
  String result;
  while (true) {
  try {
   result = in.readUTF();
   textShow.append(new java.text.SimpleDateFormat(
    "yy-MM-dd HH:mm:ss").format(new Date())
    + "\n"
    + result);
  } catch (IOException e) {
   textShow.append(new java.text.SimpleDateFormat(
    "yy-MM-dd HH:mm:ss").format(new Date())
    + "\n与服务器断开连接\n");
   break;
  }
  }
 }
 }

 class Send implements Runnable {  // 发送消息的输出流线程 
 DataOutputStream out;

 public void setDataOutputStream(DataOutputStream out) {
  this.out = out;
 }

 public void run() {
  String message = null;
  message = NickName.getText() + ":" + inputText.getText() + "\n";
  try {
  out.writeUTF(message);
  inputText.setText("");
  } catch (Exception e2) {
  textShow.append("发送失败：未连接到服务器\n");
  }

 }
 }

 public static void main(String args[]) {
 Client client = new Client();
 }
}