RMI Server Offline Problem

Question

Hello all, I am e newbie in the world of RMI programming. I have developed an application that can control two devices over the internet. The code files are given below :
Parallel.java
import java.rmi.*;
public interface Parallel extends Remote
     void relayDriver(byte k) throws RemoteException;
     byte currentStatus() throws RemoteException;
ParallelImpl.java
import parport.ParallelPort;
import java.rmi.*;
import java.rmi.server.*;
public class ParallelImpl extends UnicastRemoteObject implements Parallel
     private Byte ctrlValue;
     ParallelPort lpt1 = new ParallelPort(0x378); // 0x378 is normally the base address for the LPT1 port
     public ParallelImpl(byte a) throws RemoteException
          ctrlValue = a;
          lpt1.write(ctrlValue);
          System.out.println("Device Actuation Code "+ctrlValue);
     public void relayDriver(byte k) throws RemoteException
          ctrlValue = k;
          System.out.println("Device Actuation Code "+ctrlValue);
          lpt1.write(ctrlValue);
     public byte currentStatus() throws RemoteException
return ctrlValue;
ParallelClient.Java
import java.io.*;
import java.rmi.*;
import java.rmi.server.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class ParallelClient extends JApplet implements ActionListener
     Byte g;
     String url = "rmi://169.254.196.149/";
     private Container container;
     private javax.swing.JTextArea resultArea;
     public void init()
          container = getContentPane();
          container.setLayout( new BorderLayout() );
          resultArea = new javax.swing.JTextArea();
          JRadioButton buttonZero = new JRadioButton("No Device
On");
     buttonZero.setMnemonic(KeyEvent.VK_A);
     buttonZero.setActionCommand("0");
     buttonZero.setSelected(true);
     JRadioButton buttonOne = new JRadioButton("Device 1 On
Only");
     buttonOne.setMnemonic(KeyEvent.VK_B);
     buttonOne.setActionCommand("1");
     JRadioButton buttonTwo = new JRadioButton("Device 2 On
Only");
     buttonTwo.setMnemonic(KeyEvent.VK_C);
     buttonTwo.setActionCommand("2");
     JRadioButton buttonThree = new JRadioButton("Device 1
and 2 Both On");
     buttonThree.setMnemonic(KeyEvent.VK_D);
     buttonThree.setActionCommand("3");
     //Group the radio buttons.
     ButtonGroup group = new ButtonGroup();
     group.add(buttonZero);
     group.add(buttonOne);
     group.add(buttonTwo);
     group.add(buttonThree);
     //Register a listener for the radio buttons.
     buttonZero.addActionListener(this);
     buttonOne.addActionListener(this);
     buttonTwo.addActionListener(this);
     buttonThree.addActionListener(this);
          JPanel radioPanel = new JPanel(new GridLayout(0, 1));
     radioPanel.add(buttonZero);
     radioPanel.add(buttonOne);
     radioPanel.add(buttonTwo);
     radioPanel.add(buttonThree);
     container.add(radioPanel, BorderLayout.LINE_START);
          container.add(resultArea, BorderLayout.SOUTH);
     public void actionPerformed(ActionEvent e)
          try
               Parallel r1 = (Parallel)Naming.lookup(url +
"inival");
               if(r1.currentStatus()==0)
                         resultArea.setText("Previous
Status: No Devices Online....");
                    else if(r1.currentStatus()==1)
                         resultArea.setText("Previous
Status: Device 1 Online. Device 2 Offline.");
                    else if(r1.currentStatus()==2)
                         resultArea.setText("Previous
Status: Device 2 Online. Device 1 Offline.");
                    else
                         resultArea.setText("Previous
Status: Device 1 & 2 both are Online.");
               g = Byte.parseByte(e.getActionCommand());
               r1.relayDriver(g);
               if(r1.currentStatus()==0)
                         resultArea.setText("Current
Status: No Devices Online....");
                    else if(r1.currentStatus()==1)
                         resultArea.setText("Current
Status: Device 1 Online. Device 2 Offline.");
                    else if(r1.currentStatus()==2)
                         resultArea.setText("Current
Status: Device 2 Online. Device 1 Offline.");
                    else
                         resultArea.setText("Current
Status: Device 1 & 2 both are Online.");
          catch(Exception et)
               resultArea.setText("Server OffLine");
ParallelServer.java
import java.io.*;
import java.rmi.*;
import java.rmi.server.*;
public class ParallelServer
     public static void main(String args[])
          try
               System.out.println("Constructing Server Implementations ....");
               ParallelImpl p1 = new ParallelImpl((byte)0);
               System.out.println("Binding Server Implementation to registry ....");
               Naming.rebind("inival",p1);
               System.out.println("Waiting for invocations from Client ....");     
          catch(Exception e)
               System.out.println("Server is Offline or Line has broken. Error : "+ e);
The corresponding stub files, class files have been loaded on the internet. http://rcviproject.110mb.com/
On the server machine the rmi registry is on and the ParallelServer program is also running. But when the applet at the URL is actuated then it shows 'server offline'. Why is this happening? Please help.

Answer 1

That did not print anything. The server when started by the following commands :
start rmiregistry
start java ParallelServer
continues to run at Waiting for invocation from client ...... no error msg is shown.
do i need tomcat on the server machine in addition to this ?