could not get a field value by reflection getter

String[] maliste = ["Dinar Algérien","Livre Sterling","Dollar Canadien"];

List<Devise> lesDevises = new ArrayList<Devise>();

for (String uneDevise : maliste){
        Devise newDevise = new Devise();
        newDevise.setAchat(0);
        newDevise.setCode("XOF BCEAO "+ newDevise.getPersistenceId());
        newDevise.setName(uneDevise);
        newDevise.setSymbol("XOF"+ newDevise.getPersistenceId());
        newDevise.setTaux(0);
        newDevise.setVente(0);
        lesDevises.add(newDevise);
}

return lesDevises;