How to start a RMI program

Question

I have write RMI program the problem it's that I don't now how to start it
This is my Interface
import java.rmi.*;
import java.rmi.Remote;
public interface DataInterface extends Remote {
public String testRemote() throws RemoteException ;
This is my server
import java.rmi.*;
import java.rmi.server.*;
import java.rmi.registry.*;
public class DataServer extends UnicastRemoteObject implements DataInterface {
DataServer() throws RemoteException{
super();
public String testRemote() throws RemoteException{
return "Merge obiectul remote";
public static void main(String[] args) {
System.setSecurityManager(new RMISecurityManager());
try{
//LocateRegistry.createRegistry(1099);
DataServer testServer = new DataServer();
Naming.rebind("//localhost/SERVER", testServer);
}catch(Exception e){
e.printStackTrace();
This is my client
import java.rmi.*;
import java.rmi.registry.*;
import java.rmi.server.*;
public class DataClient {
public static void main(String[] args) {
System.setSecurityManager(new RMISecurityManager());
try{
Remote remoteServer = Naming.lookup("//localhost/SERVER");
DataServer server = (DataServer)remoteServer;
System.out.println(server.testRemote());
} catch(Exception e){
e.printStackTrace();
And this is my policy file
grant {
permission java.net.SocketPermission "*:1024-65535",
"connect,accept";
permission java.net.SocketPermission "*:80", "connect";
All this files are in c:\temp and this directory is in my PATH variable. I've compilated the interface, server, client with
javac -classpath file.java
After that I generate with rmic the stub skel file in c:\temp. In this point I have all the files that I need. If is somebody kind to tell me from now what do I have to do to make this program work :)). Thanks for any help.

Answer 1

so..u have everything ready..
open cmd prompt and say 'start rmiregistry' - >this opens a new cmd prompt for rmi registry.let it run
now first run ur server by saying 'java DataServer' // include options as u like. this should be running without terminating.
now open new cmd prompt for ur client and say 'java DataClient '.
thats all.
if you want to run the client from a different machine, then try copying the client file into another m/c after changing the code from 'localhost' to the ip address of the server m/c. then just say 'java DataClient '
hope this works fine!