RMI Connection Refused to Host

I am trying to get Java RMI to work on a simple tutorial case. I have
these classes to use in a Hello World example:

(HelloClient.java):
import java.rmi.Naming;
public class HelloClient {
   public static void main(String[] args) {
      try {
         HelloInterface hello = (HelloInterface)
Naming.lookup("//localhost/Hello");
         System.out.println (hello.say());
       } catch (Exception e) {
         System.out.println ("HelloClient exception: " + e);
       }
   }
}

(HelloServer.java):
import java.rmi.Naming;
public class HelloServer {
   public static void main(String[] args) {
      try {
         Hello h = new Hello ("Hello, world!");
         Naming.rebind ("Hello", h);
         System.out.println ("Hello Server is ready.");
       } catch (Exception e) {
         System.out.println ("Hello Server failed: " + e);
       }
   }
}

(Hello.java):
import java.rmi.*;
import java.rmi.server.*;
public class Hello extends UnicastRemoteObject implements
HelloInterface {
   private String message;
   /**
    * Construct a remote object
    * @param msg the message of the remote object, such as "Hello,
world!".
    * @exception RemoteException if the object handle cannot be
constructed.
    */
   public Hello (String msg) throws RemoteException {
     message = msg;
   }
   /**
    * Implementation of the remotely invocable method.
    * @return the message of the remote object, such as "Hello,
world!".
    * @exception RemoteException if the remote invocation fails.
    */
   public String say() throws RemoteException {
     return message;
   }
}

(HelloInterface.java):
import java.rmi.*;
public interface HelloInterface extends Remote {
   /**
    * Remotely invocable method.
    * @return the message of the remote object, such as "Hello,
world!".
    * @exception RemoteException if the remote invocation fails.
    */
   public String say() throws RemoteException;
}

I compiled all the classes & used rmic (>>rmic Hello) which only
created Hello_Stub.class, not Hello_Skel.class like is apparently
supposed to happen.

I can't get anywhere though since every time I start the HelloServer
I instantly get this error:
Trouble: java.rmi.ConnectException: Connection refused to host:
192.168.0.102; nested exception is:
    java.net.ConnectException: Connection refused: connect

I have been trying other tutorials and on other computers but having no
luck. What am I doing wrong?

Thanks,
Jo