public interface InterfazServidor extends java.rmi.Remote{
public long sumar(long a, long b)
  throws java.rm.RemoteException;
  
public long restar (long a, long b)
  throws java.rm.RemoteException;
  
public long multiplicar ()
  throws java.rmi.RemoteException;

public long dividir()
  throws java.rmi.RemoteException;
  
}