//package exploringjava.net;

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

public class DateAtHost extends java.util.Date {
    static int timePort = 37;
    static final long offset = 2208988800L;   //  Seconds from century to 
                                              //   Jan 1, 1970 00:00 GMT

	public DateAtHost( String host, int port ) throws IOException {
        Socket server = new Socket( host, port );
        DataInputStream din = new DataInputStream( server.getInputStream() );
        int time = din.readInt();
        server.close();
 
        setTime( (((1L << 32) + time) - offset) * 1000 );
	}

	public DateAtHost( String host ) throws IOException {
		this( host, timePort );
	}

	// Example usage:  java exploringjava.net.DateAtHost foo.bar.com
	public static void main (String [] args) throws Exception {
		System.out.println( new DateAtHost( args[0] ) );
	}
}