Java: Rdate (tool for querying the current time from a network server)

Rdate.java

import java.io.InputStream;
import java.net.Socket;
import java.util.Date;

public class Rdate {

	public static void main(String[] args) {
		try {
			Socket s = new Socket("ntp1.arnes.si", 37);
			InputStream input = s.getInputStream();
			byte[] response = new byte[4];
			input.read(response);
			
			long seconds = bytesArrayToUnsignedLong(response);	
			seconds -= (long)22089888 * 100; //convert time to UNIX EPOCH
			
			Date d = new Date(seconds * 1000);
			System.out.println(d);	
		} catch (Exception ex) {
			System.out.println("An error occured!");
			ex.printStackTrace();
		}
	}
	
	public static long bytesArrayToUnsignedLong(byte bytes[]) {
		long result = 0;
		for (int i = 0; i < bytes.length; i++) {
			result += (long)(bytes[i] & 0xff) * Math.pow(256, bytes.length-i-1);
		}
		return result;
	}

}