public Administrateur ChercherAdministrateur(String login) {
        try {
            String sql = "SELECT * FROM User WHERE login='" + login + "'";
            ResultSet rs = crud.exeRead(sql);
            Administrateur a = new Administrateur();
            while (rs.next()) {
                
                a.setLogin(rs.getString("login"));
                a.setNom(rs.getString("nom"));
                a.setPrenom(rs.getString("prenom"));
                a.setTelephone(rs.getInt("telephone"));;
            }
            return a;

        } catch (SQLException ex) {
            Logger.getLogger(AdministrateurDAO.class.getName()).log(Level.SEVERE, null, ex);
            return null;
        }
    }