Invoking RMI using Tomcat

Question

Hello
i have a question but i do not know how to solve it.
i tried to implement a small Client and Server RMI standalone application and is working fine.
However know I would like to change the implementation and use Tomcat as the Server for the application.
i have implemented this and it does not work and i have no idea why..
i have a feeling i don't know how RMI works and I am turning if someone has an example of how to do it in Tomcat.
my sample implementation is below:
HelloWorldServer
public class HelloWorldServer extends UnicastRemoteObject implements HelloWorld {
     private static final long serialVersionUID = 1128707054026502754L;
     public HelloWorldServer() throws RemoteException {
          super();
     public String helloWorld() {
          return "Hello World from RMI server!";
     public static void main(String args[]) {
          System.out.println("HelloWorldServer main");
          try {
               if (System.getSecurityManager() == null) {
                    System.out.println(" System.getSecurityManager "
                              + System.getSecurityManager());
                    System.setSecurityManager(new RMISecurityManager());
               HelloWorldServer obj = new HelloWorldServer();
               Registry registry = LocateRegistry.getRegistry("localhost");
               registry.rebind("HelloWorld", obj);
          } catch (Exception e) {
               e.printStackTrace();
}init for Servlet
public class ServerMain extends HttpServlet {
     public void init() {
          try {
               HelloWorld mainServerClass = HelloWorldServer.class.newInstance();
          } catch (InstantiationException e) {
               e.printStackTrace();
          } catch (IllegalAccessException e) {
               e.printStackTrace();
}correct me..because i get error: RegistryImpl.lookup(RegistryImp.java:106)
can some please shed a light...
thnx

Answer 1

Hello
Actually I have not been able to do it.
And i have not understood what you meant when you said that
ejp wrote:
Your main() does a Naming.bind(). Your ServerMain doesn't.could you please elaborate more..
new to RMI..tried it for few hours. :-) thnx