How to get Time from Different Work Station on the Network

Question

Hi,
How do I get time from different work station on the network using its ip:port etc.
Lets say, my main server-side Java application is running on a work station 123.12.123.1:1527,
the client-side applications are accessing it using above IP.
what I wanna do is, use the time of 123.12.123.1 machine throughout the application, not client local time.
Appreciated..

Answer 1

Ok, this network service on IP:Port is working for me, I hope this is the best way of doing it.
In server application, I have this
package RenameItToYourOwnPackage;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.text.SimpleDateFormat;
public class ServerSocketExample implements Runnable {
    private ServerSocket server;
    private int port = 7777;
    Socket socket;
    public void run() {
        try {
            System.out.println("Waiting for client message");
            server = new ServerSocket(port);
            while (true) {
                socket = server.accept();
                // Read a message sent by client application
                ObjectInputStream ois = new ObjectInputStream(socket.getInputStream());
                String clientMessage = (String) ois.readObject();
                System.out.println("Message sent by client: " + clientMessage);
                // send current datetime to client
                ObjectOutputStream oos = new ObjectOutputStream(socket.getOutputStream());
                oos.writeObject(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new java.util.Date()));
                ois.close();
                oos.close();
                socket.close();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
}In the client application I have
package RenameItToYourOwnPackage;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
public class ClientSocketExample {
    static String dateTimeString;
    public ClientSocketExample() {
    public static String getServerDateString() {
        try {
            // Create a connection to the server socket on the server application
            InetAddress host = InetAddress.getByName("127.0.0.1");
            Socket socket = new Socket(host.getHostName(), 7777);
            // Send a message to the server application
             ObjectOutputStream oos = new ObjectOutputStream(socket.getOutputStream());
             oos.writeObject("Send me today's timestamp as string");
            // Read the response by server application
            ObjectInputStream ois = new ObjectInputStream(socket.getInputStream());
            dateTimeString = (String) ois.readObject();
            //System.out.println("Message sent by server: " + message);
            ois.close();
            oos.close();
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        return dateTimeString;
}And I run the service on the server-side with
        new Thread(new ServerSocketExample()).start();On the client-side I receive the date with
        System.out.println("DateTime on Server : " + ClientSocketExample.getServerDateString());Edited by: nkamir on Sep 13, 2010 2:53 PM