daywatch.txt

利用TCP协议编程（使用SeverSocket和Socket编程）

import java.net.*;
public class DayWatch
{
	private DatagramSocket ds;
	private DatagramPacket dp;
		
	public static void main(String args[]) throws Exception
	{
		DayWatch d = new DayWatch();
		d.go();
	}
	public void go() throws Exception
	{
		...;//长度为64的字节型数组
		String s;
		ds =...;//新建数据报套接字
		dp =...;//构造一个接收数据报
			
		...//循环
		{
			...;//接收数据报
			...;//将接收数据报中的数据转换为字符串
			System.out.println("Time signal received form " +/*接收数据报的地址*/ + "\n Time is: " + /*接收到的字符串*/);
		}
	}
}

javac