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We'll create a really trivial Hello server, which implements the following remote interface:

package rmi;

import java.rmi.Remote;
import java.rmi.RemoteException;

/**
 * RMI Remote interface for Hello Server
 * @author Bryan Higgs
 */
public interface Hello extends Remote
{
  String sayHello() throws RemoteException;
}

Note that:

• The interface must extend the java.rmi.Remote interface
• Each remote method must throw the java.rmi.RemoteException exception.