testudpclient.java

这是上学堂马士兵老师教授的javaSE的所有源代码

import java.net.*;
import java.io.*;

public class TestUDPClient
{
	public static void main(String args[]) throws Exception
	{
		long n = 10000L;
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		DataOutputStream dos = new DataOutputStream(baos);
		dos.writeLong(n);
		
		byte[] buf = baos.toByteArray();
System.out.println(buf.length);
		
		DatagramPacket dp = new DatagramPacket(buf, buf.length, 
											   new InetSocketAddress("127.0.0.1", 5678)
											   );
		DatagramSocket ds = new DatagramSocket(9999);
		ds.send(dp);
		ds.close();
		
	}
}