Java UDP通讯程序升级版

最近一直在写C#的UDP通讯方面的程序，抽空把以前写的Java的UDP通讯程序拿出来做了一些升级的修改，把以前一些不足的地方做了改动，同时使用exe4j软件编译成exe文件，软件效果如下所示：
同时把代码贴出来，以供大家指点一二。
Main.java(主函数)
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package jappudp;
/**
 *
 * @author AlimysoYang
 */
public class Main {
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
      UdpFrame udpframe = new UdpFrame();
    }
}
UdpFrame.java(窗口单元)
/*
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 * and open the template in the editor.
 */
package jappudp;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
/**
 *
 * @author AlimysoYang
 * @version 1.0.1
 */
public class UdpFrame extends JFrame implements ActionListener
{
  //初始化窗口控件
  private JLabel lbRecvPort = new JLabel("接收端口",JLabel.LEFT);
  private JLabel lbSendIP = new JLabel("发送IP",JLabel.LEFT);
  private JLabel lbSendPort = new JLabel("发送端口",JLabel.LEFT);
  private JLabel lbRecv = new JLabel("接收数据",JLabel.LEFT);
  private JLabel lbSend = new JLabel("发送数据",JLabel.LEFT);
  private JLabel lbInfo = new JLabel("",JLabel.LEFT);
  private JLabel lbVersion = new JLabel("AlimysoYang (for NetBeans) v1.01",JLabel.LEFT);
  private JTextField tfRecvPort = new JTextField("8800",6);
  private JTextField tfSendIP = new JTextField("127.0.0.1",15);
  private JTextField tfSendPort = new JTextField("8801",6);