功能要求：用图形化界面实现QQ的部分功能，建立一个网络聊天程序，可以实现多人聊天，并可以保存聊天记录。
（1）多线程聊天程序；
（2）可以接收多人聊天；
（3）可以发送文件；
（4）可以发送图片；
（5）可以保存聊天记录。
package java3.T16;
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.net.UnknownHostException;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
/*
* 用UDP技术实现简单聊天软件
* */
import javax.swing.JTextField;
import javax.swing.JTextPane;
public class UdpChat extends JFrame implements ActionListener,Runnable{
/*
* 关键参数
* 1.自己的IP及端口，
* 2.对方的IP及端口
* 3.启动线程的按钮
* 4.发送信息的按钮
* 5.聊天内容的文本区域框
*
* */
JTextField txtSelfAddr,txtSelfPort,txtOtherAddr,txtOtherPort;
JButton btnStart,btnSend,btnClose;
//发送信息及接收信息的文本区域框
JTextPane txtChatMsg,txtReceMsg;
//数据报Socket;
DatagramSocket socket;
public UdpChat() {
super("用UDP技术实现简单聊天软件");
//自己的IP
JLabel lblSelfAddr = new JLabel("自己IP：");
txtSelfAddr = new JTextField("127.0.0.1",8);
//自己的端口
JLabel lblSelfPort = new JLabel("自己端口：");
txtSelfPort = new JTextField("8888",5);
//对方IP
JLabel lblOtherAddr = new JLabel("自己端口：");
txtOtherAddr = new JTextField("127.0.0.1",8);
//对方端口
JLabel lblOtherPort = new JLabel("对方端口：");
txtOtherPort = new JTextField("8889",5);
//启动线程的按钮
btnStart = new JButton("启动接收线程");
//发送信息
btnSend = new JButton("发送");
//关闭程序
btnClose = new JButton("关闭");
//注册按钮事件
btnStart.addActionListener(this);
btnSend.addActionListener(this);
btnClose.addActionListener(this);
JPanel northPane = new JPanel(new FlowLayout());
northPane.add(lblSelfAddr);
northPane.add(txtSelfAddr);
northPane.add(lblSelfPort);
northPane.add(txtSelfPort);
northPane.add(lblOtherAddr);
northPane.add(txtOtherAddr);
northPane.add(lblOtherPort);
northPane.add(txtOtherPort);
northPane.add(btnStart);
add(northPane,BorderLayout.NORTH);
//聊天内容文本框放在中间
txtChatMsg = new JTextPane();
txtReceMsg = new JTextPane();
JPanel centerPane = new JPanel(new GridLayout(2,1,5,10));
centerPane.add(txtReceMsg);
centerPane.add(txtChatMsg);
add(centerPane);
//发送按钮，关闭按钮放在底部右边
JPanel southPane = new JPanel(new FlowLayout(FlowLayout.RIGHT));
southPane.add(btnSend);
southPane.add(btnClose);
add(southPane,BorderLayout.SOUTH);
setSize(800,500);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
}
//启动接收线程
public static void main(String[] args) {
UdpChat chat = new UdpChat();
}
@Override
public void actionPerformed(ActionEvent e) {
if(e.getSource() == btnClose) {
System.exit(1);
}else if(e.getSource() == btnStart) {
//启动线程
Thread thread = new Thread(this);
thread.start();
//把按钮状态设置为不可用状态
btnStart.setEnabled(false);
}else if(e.getSource() == btnSend) {
//获取对方的IP及端口
String host = txtOtherAddr.getText();
int port = Integer.parseInt(txtOtherPort.getText());
InetAddress netAddr;
try {
netAddr = InetAddress.getByName(host);
//创建发送信息的Socket
DatagramSocket socket = new DatagramSocket();
//获取发送文本框的内容
String msg = txtChatMsg.getText();
//创建数据报
byte b[] = msg.getBytes();
DatagramPacket p = new DatagramPacket(b, b.length,netAddr,port);
//发送
socket.send(p);
System.out.println("发送成功...");
//获取接收文本框的内容,同时加入发送的内容
msg = txtReceMsg.getText() + "\n发给对方的信息：" + msg;
txtReceMsg.setText(msg);
//清空发送框的内容
txtChatMsg.setText("");
//关闭
socket.close();
} catch (UnknownHostException e1) {
e1.printStackTrace();
} catch (SocketException e1) {
e1.printStackTrace();
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
@Override
public void run() {
//监听是否有信息需要接收
//获取自己端口
int port = Integer.parseInt(txtSelfPort.getText());
byte b[] = new byte[2048];
int len=0;
try {
//创建UDP套接字(DatagramSocket)
socket = new DatagramSocket(port);
//接收信息的DatagramPacket对象
DatagramPacket p = new DatagramPacket(b, b.length);
while(true) {
//接收信息
socket.receive(p);
//把接收的数据转换为字符串
len = p.getLength();
String msg = new String(b,0,len);
msg = txtReceMsg.getText() + "\n接收对方的信息：" + msg;
txtReceMsg.setText(msg);
}
} catch (SocketException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
JAVA QQ 之前写过 给你提供一个下载链接，你要的功能都有：
链接: https://pan.baidu.com/s/10ZodsEeLkECyf1SOA6p3aQ 提取码: n4c8