public static Action create(String action){
        Action actionObject = null;
        String nomeClasse = "br.com.implementacaoObserverWeb.action." + action + "Action";
        Class classe = null;
        Object object = null;
        try{
            classe = Class.forName(nomeClasse);
            object = classe.newInstance();                      
        }catch(Exception ex){
            return null;
        }
        if(!(object instanceof Action))
        return null;
        
        actionObject = (Action) object;
        return actionObject;
              
    }