IMapper remote = (IMapper) context.lookup("MapperImp/remote");
MapElement element = new MapElement();
element.setKey("858");
element.setValue("UY");
element.setDescription("C�digo de moneda en pesos");
remote.addMapping(element);
MapElement mm = remote.getMapElement("m","858");
System.out.println("Moneda: " + mm.getValue());
} catch (NamingException e) {
e.printStackTrace();
}