public static void main(String[] args) { EntityManagerFactory emf = Persistence.createEntityManagerFactory("gestionPedaPU"); EntityManager em = emf.createEntityManager(); Module BD = em.find(Module.class, "BD"); System.out.println(BD.getCode() + " a pour specialistes : "); Collection<Prof> specialistes = BD.getSpecialistes(); for (Prof profCour : specialistes) System.out.println(profCour.getNomProf() + ' ' + profCour.getPrenomProf()); }