package test1;

import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;

import javax.swing.JOptionPane;

/**
 *
 * @author Vallentin <[email protected]>
 * @since April 8, 2012
 *
 */

public class Client
{
    public static Socket socket;

    public static int port = 2406;
    public static String ip = "";



    public static void main(String[] args)
    {
        try
        {
            String local;

            try
            {
                local = InetAddress.getLocalHost().getHostAddress() + ":" + port;
            }
            catch (UnknownHostException ex)
            {
                local = "Network Error";
            }

            ip = (String) JOptionPane.showInputDialog(null, "IP: ", "Info", JOptionPane.INFORMATION_MESSAGE, null, null, local);

            port = Integer.parseInt(ip.substring(ip.indexOf(":") + 1));
            ip = ip.substring(0, ip.indexOf(":"));

            socket = new Socket(ip, port);

            String username = System.getProperty("user.name");
            username = (String) JOptionPane.showInputDialog(null, "Username: ", "Info", JOptionPane.INFORMATION_MESSAGE, null, null, username);

            ObjectOutputStream oos = new ObjectOutputStream(socket.getOutputStream());
            oos.writeObject(username);

            ObjectInputStream ois = new ObjectInputStream(socket.getInputStream());
            String response = (String) ois.readObject();

            JOptionPane.showMessageDialog(null, response, "Message", JOptionPane.INFORMATION_MESSAGE);
        }
        catch (Exception ex)
        {
            JOptionPane.showMessageDialog(null, "Error: " + ex.getMessage(), "Alert", JOptionPane.ERROR_MESSAGE);
            System.exit(0);
        }

    }
}

package test1;

import java.io.Serializable;

/**
 *
 * @author Vallentin <[email protected]>
 * @since April 8, 2012
 *
 */

public class DataPackage implements Serializable
{
    public float x = 0.0f;
    public float y = 0.0f;

    public String username = "";


}