Problem in Rmi in machine with two IP local & internet

Question

I am having problem in Rmi in machine with two interfaces local & internet
i.e..
if I set property java.rmi.server.hostname+ to the one with internet ip address using System.setProperty()
I can not access Rmi through local LAN
if I do not set the property Everything works fine in LAN but I can not access the RMI from Internet
Pls tell me the solution

Answer 1

Consider the code Here and if you can suggest in this code what changes I have to make ,I will be thankful to you
// Class MyHelloServer
package rmi.server;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.MalformedURLException;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.rmi.*;
import java.rmi.server.ServerNotActiveException;
import java.util.ArrayList;
import java.util.Enumeration;
import javax.swing.JOptionPane;
import rmi.bl.HelloImpl;
     public class MyHelloServer
          static public ArrayList hostList = new ArrayList();
          static String hostname=null;
          static String SERVER_PORT="9999";
          static String MULTIPLE_BIND="true";
          static{
               startTest();
          public static void startTest(){
               try {
                    Enumeration enum1= NetworkInterface.getNetworkInterfaces();
                    while(enum1.hasMoreElements()){
                         NetworkInterface networkInterface = (NetworkInterface)enum1.nextElement();
                         Enumeration enum2 = networkInterface.getInetAddresses();
                         while(enum2.hasMoreElements()){
                              Object obj = enum2.nextElement();
                              if(obj instanceof Inet4Address){
                                   if(!hostList.contains(((Inet4Address)obj).getHostAddress())){
                                   hostList.add(((Inet4Address)obj).getHostAddress());
                                        if(networkInterface.isPointToPoint()){
                                                  hostname=((Inet4Address)obj).getHostAddress();
               }catch (SocketException e) {
                    e.printStackTrace();
               if(hostname!=null){
                    System.setProperty("java.rmi.server.hostname", hostname);
               System.out.println(System.getProperty("java.rmi.server.hostname")+"<<<<<< New");
          public static void main(String args[])
           try
            HelloImpl storeServer = new HelloImpl();
            int port=Integer.parseInt(SERVER_PORT);
            String host=InetAddress.getLocalHost().getHostAddress();
             java.rmi.registry.LocateRegistry.createRegistry(port);
            if(MULTIPLE_BIND.equals("true")){ 
                for (int i = 0; i < hostList.size(); i++) {
                     System.out.println(hostList.get(i).toString() + " <<<<IP" + i);
                     Naming.rebind("//"+hostList.get(i).toString()+":"+port+"/STORESERVER", storeServer);
              }else{
                   Naming.rebind("//"+host+":"+port+"/"+"STORESERVER", storeServer);
            MyHelloServer.MyThread thread= new MyThread(":"+port+"/"+"STORESERVER", storeServer);
            System.out.println("Remote Server started.....");
        catch (java.net.MalformedURLException me)
             System.out.println("Malformed URL: " + me.toString());
             System.exit(0);
        catch (RemoteException re)
             System.out.println("Remote exception: " + re.toString());
             System.exit(0);
        catch (Exception e)
             System.out.println("Error: " + e.toString());
             System.exit(0);
     static class MyThread extends javax.swing.JPanel implements ActionListener{
               String str="";
               HelloImpl impl;
               public MyThread(String text,HelloImpl storeServer){
                    this.impl=storeServer;
                    str=text;
                    int timetoWaitForCheck=15000;
                    javax.swing.Timer timer = new javax.swing.Timer(timetoWaitForCheck, this);
                    timer.start();
                      public void actionPerformed(ActionEvent ae)
                         startTest();
                         // Rebind
                               for (int i = 0; i < hostList.size(); i++) {
                                    try {
                                        Naming.rebind("//"+hostList.get(i).toString()+str, impl);
                                   } catch (RemoteException e) {
                                        e.printStackTrace();
                                   } catch (MalformedURLException e) {
                                        e.printStackTrace();
}