package com.swift;import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;public class ChatServer {public static void main(String[] args) {try {ServerSocket ss = new ServerSocket(8888);for (;;) {Socket s = ss.accept();//当有连接，则显示，用于测试System.out.println("a client connected success");}} catch (IOException e) {// TODO Auto-generated catch block
            e.printStackTrace();}}}

package com.swift;import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;public class ChatClientFrame2 extends JFrame {private static final long serialVersionUID = -118470059355655240L;JLabel label_shang=new JLabel();JLabel label_xia=new JLabel();JTextField tf = new JTextField(38);JTextArea ta = new JTextArea(15, 50);JButton button=new JButton();public ChatClientFrame2() {setBounds(200, 200, 500, 400);setTitle("客户端聊天工具 —— 0.3");//对窗口进行大的布局，分为三行一列，在pBasic面板上添加三个面板shang zhong xiaJPanel pBasic=new JPanel();pBasic.setLayout(new BorderLayout());//不设置默认也是这种布局模式setContentPane(pBasic);//把面板放在窗口上，不记得用this.关键字JPanel shang=new JPanel();JPanel zhong=new JPanel();JPanel xia=new JPanel();//设置JPanel面板的大小shang.setSize(470, 25);zhong.setSize(470, 180);xia.setSize(470, 40);pBasic.add(shang,BorderLayout.NORTH);pBasic.add(zhong,BorderLayout.CENTER);pBasic.add(xia,BorderLayout.SOUTH);shang.setBackground(Color.red);zhong.setBackground(Color.yellow);xia.setBackground(Color.blue);/** 三个面板，上边放一个标签“聊天记录”，中间放一个文本域，* 下边分为左中右——分别放标签“输入信息“，文本框和”发送“按钮*/label_shang.setText("聊天记录");shang.add(label_shang);ta.setLineWrap(true);// 自动换行JScrollPane scroll=new JScrollPane(ta);// 增加滚动条，以便不增加行数
        zhong.add(scroll);label_xia.setText("输入信息");xia.add(label_xia,BorderLayout.WEST);/** 增加功能，窗口监听事件，窗口打开时设置光标焦点在tf文本域中*/this.addWindowListener(new WindowAdapter() {@Overridepublic void windowOpened(WindowEvent e) {tf.requestFocus();}});xia.add(tf,BorderLayout.CENTER);button.setText("发送");xia.add(button,BorderLayout.EAST);/** 增加“发送”按钮的功能，增加回车的功能，监听相同，* 则使用内部类实现，以提高代码复用性*/final class ShareListener implements ActionListener{@Overridepublic void actionPerformed(ActionEvent e) {String taText=ta.getText();String tfText=tf.getText()+"\r\n";ta.setText(taText+tfText);tf.setText("");}}button.addActionListener(new ShareListener());tf.addActionListener(new ShareListener());//通过压缩自动调整各个面板
        pack();setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);// 点关闭按钮同时退出程序setVisible(true);//创建窗体直接调用连接服务器
        connect();}/** 增加一个连接到服务器的方法*/public void connect() {try {Socket s=new Socket("127.0.0.1",8888);System.out.println("connected!");} catch (UnknownHostException e) {// TODO Auto-generated catch block
            e.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch block
            e.printStackTrace();}}public static void main(String[] args) {// 别忘了创建窗体对象，也可以用生成对象调用其他的方法如launchFrame()new ChatClientFrame2();}}