Server.java

package com.rmicallback.server;

import java.rmi.RMISecurityManager;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.UnicastRemoteObject;

public class Server {

    private static final String SRVHOST = "localhost";

    private static Registry registry;

    public static void main(String[] args) {

        System.setProperty("java.rmi.server.hostname", SRVHOST);
        System.setProperty("java.rmi.server.useCodebaseOnly","false");          // No usamos codebase
        System.setProperty("java.security.policy","src/srv.policy");

        if(System.getSecurityManager()==null)
            System.setSecurityManager(new RMISecurityManager());

        try {
            registry = LocateRegistry.createRegistry(Registry.REGISTRY_PORT);
            ServerInterface services = new ServerImpl();
            //UnicastRemoteObject.exportObject(services, 0);
            registry.rebind("ServerAPI", services);
        } catch (RemoteException ex) {
            ex.printStackTrace();
        }
    }
}