1.) Should we define RObject interfaces, both implements Remore interface

import java.rmi.*;

public interface RObject extends Remote {
  // simple parameters
  void primitiveArg(int num) throws RemoteException;
  
  // parameters by value
  void argumentByValue(Integer num) throws RemoteException;
}

2.) Lets implement the codes of the remote objects

import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;

public class RObjectImpl extends UnicastRemoteObject implements RObject {
      private static final long serialVersionUID = 6350331764929058681L;
      public RObjectImpl() throws RemoteException {
      } 
  
      @Override
      public void primitiveArg(int num) throws RemoteException {
         System.out.println(num);
      }

      @Override
      public void argumentByValue(Integer num) throws RemoteException {
         System.out.println(num);
      }
}  

3.) Lets create an instance of the remote object and launch registry and bind to the registry.

import java.rmi.Naming;

import org.ait.RObject;
import org.ait.RObjectImpl;


public class RegisterService {
/**
 * @param args
 */
public static void main(String[] args) {
	try {
                        java.rmi.registry.LocateRegistry.createRegistry(1099);
		  RObject robj = new RObjectImpl();
		  Naming.rebind("rmi://localhost:1099/RObjectServer", robj);
                        System.out.println("Registered...");
		} catch (Exception e) {
		  e.printStackTrace();
		}
}
}

4.) Use the remote object

import java.rmi.Naming;

public class Client {
    public static void main(String[] args) {
        try {
            // registry binding 
           RObject robj = (RObject) Naming
                    .lookup("rmi://localhost:1099/RObjectServer");
    
            robj.primitiveArg(2012);

            robj.argumentByValue(new Integer(2012));

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}