一、窗口的制作；因为有了myeclipse所以窗口界面的制作就不需要手工写代码了。下面是我做的效果图：

二、界面做出来了，接下来就是写实现功能的代码了。

       首先，整理下思路，我们想实现点对点的聊天，功能像QQ那样随意的发信息（这是想实现的功能）。要传输数据就涉及到网络编程。这里我是通过JAVA的socket实现。我们想发送信息，我们就得有发送信息的代码；

我的代码如下：

				String host=txtF1.getText();int port=Integer.parseInt(txtF2.getText());try {Socket client=new Socket(host,port);Writer wt=new OutputStreamWriter(client.getOutputStream());wt.write(txtare2.getText());wt.flush();wt.close();client.close();txtare2.setText(null);} catch (UnknownHostException e1) {// TODO Auto-generated catch blocke1.printStackTrace();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();System.out.println("服务器连接失败！");}

我们还想接收消息，我们就得监听端口将发送过来的信息读取出来然后传给textare控件；我的代码如下：

	    int port ;port =Integer.parseInt(txtF.getText());ServerSocket server;Socket socket;String line;BufferedReader br;try {server = new ServerSocket(port);do{System.out.println("服务已启动！");socket = server.accept();br = new BufferedReader(new InputStreamReader(socket.getInputStream()));line = br.readLine();txtare.append("客户端："+line+"\n");txtare.paintImmediately(txtare.getBounds());if(line.equals("exit")){server.close();System.out.println("服务已关闭！");break;}}while(true);socket.close();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}

上面就是我实现这两个功能的代码；下面是所有的代码。

        主类代码：

import java.awt.EventQueue;import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JButton;import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.net.*;
import java.io.*;public class ChatRooms {private JFrame frame;private JTextField txtF1;private JTextField txtF2;private JTextArea txtare1;private JTextArea txtare2;/*** Launch the application.*/public static void main(String[] args) {EventQueue.invokeLater(new Runnable() {public void run() {try {ChatRooms window = new ChatRooms();window.frame.setVisible(true);} catch (Exception e) {e.printStackTrace();}}});}/*** Create the application.*/public ChatRooms() {initialize();}/*** Initialize the contents of the frame.*/private void initialize() {frame = new JFrame();frame.setBounds(100, 100, 450, 500);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.getContentPane().setLayout(null);JLabel lblNewLabel = new JLabel("IP\u5730\u5740\uFF1A");lblNewLabel.setBounds(10, 10, 54, 15);frame.getContentPane().add(lblNewLabel);txtF1 = new JTextField();txtF1.setText("127.0.0.1");txtF1.setBounds(55, 7, 90, 21);frame.getContentPane().add(txtF1);txtF1.setColumns(10);JLabel lblNewLabel_1 = new JLabel("\u7AEF\u53E3\uFF1A");lblNewLabel_1.setBounds(177, 10, 54, 15);frame.getContentPane().add(lblNewLabel_1);txtF2 = new JTextField();txtF2.setText("8898");txtF2.setBounds(215, 7, 66, 21);frame.getContentPane().add(txtF2);txtF2.setColumns(10);JScrollPane scrollPane = new JScrollPane();scrollPane.setBounds(10, 36, 414, 274);frame.getContentPane().add(scrollPane);txtare1 = new JTextArea();scrollPane.setViewportView(txtare1);JScrollPane scrollPane_1 = new JScrollPane();scrollPane_1.setBounds(10, 332, 414, 83);frame.getContentPane().add(scrollPane_1);txtare2 = new JTextArea();scrollPane_1.setViewportView(txtare2);JButton btnNewButton = new JButton("\u5173\u95ED");btnNewButton.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {System.exit(0);}});btnNewButton.setBounds(153, 428, 93, 23);frame.getContentPane().add(btnNewButton);JButton btnNewButton_1 = new JButton("\u53D1\u9001");btnNewButton_1.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {//------------------------------------------------------------------------------------------------String host=txtF1.getText();int port=Integer.parseInt(txtF2.getText());try {Socket client=new Socket(host,port);Writer wt=new OutputStreamWriter(client.getOutputStream());wt.write(txtare2.getText());wt.flush();wt.close();client.close();txtare2.setText(null);} catch (UnknownHostException e1) {// TODO Auto-generated catch blocke1.printStackTrace();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();System.out.println("服务器连接失败！");}}//---------------------------------------------------------------------------------------------------------});btnNewButton_1.setBounds(294, 428, 93, 23);frame.getContentPane().add(btnNewButton_1);JButton btnNewButton_2 = new JButton("\u542F\u52A8\u670D\u52A1");btnNewButton_2.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {ServerThread st=new ServerThread(txtare1,txtF2);st.start();}});btnNewButton_2.setBounds(331, 6, 93, 23);frame.getContentPane().add(btnNewButton_2);}
}

端口监听与信息的代码我放在创建的一个线程类里面；代码如下：

import java.io.*;
import java.net.*;
import javax.swing.*;import javax.swing.JTextArea;
public class ServerThread extends Thread {JTextArea txtare;JTextField txtF;public ServerThread(JTextArea txtare1,JTextField txtFile){this.txtare=txtare1;this.txtF=txtFile;}@Overridepublic void run() {// TODO Auto-generated method stubint port ;port =Integer.parseInt(txtF.getText());ServerSocket server;Socket socket;String line;BufferedReader br;try {server = new ServerSocket(port);do{System.out.println("服务已启动！");socket = server.accept();br = new BufferedReader(new InputStreamReader(socket.getInputStream()));line = br.readLine();txtare.append("客户端："+line+"\n");txtare.paintImmediately(txtare.getBounds());if(line.equals("exit")){server.close();System.out.println("服务已关闭！");break;}}while(true);socket.close();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}}}

以上就是我学习JAVA的socket编程所制作的简易聊天室，新手程序猿。不足之处还望多多交流指导。

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