点击次数：

import java.net.*;
public class UDPClientTest3 {
    public static void main(String[] args) throws Exception
    {
        DatagramSocket ds=new DatagramSocket();
        String str="hello,this  is majinzhu";
        DatagramPacket dp=new DatagramPacket(str.getBytes(),str.length(),
         InetAddress.getByName("127.0.0.1"),7000);
        ds.send(dp);
        ds.close();
    }
}