Problème de lecture de ma base de Données depuis mon Servlet

        boolean UserAcess(String user , String pass) throws SQLException {
        String sql = "SELECT benutzername , passwort FROM benutzer WHERE (benutzername=? AND passwort=?);";
        
       PreparedStatement ps = conn.prepareStatement(sql) ;
       ps.setString(1, "admdin");
       ps.setString(2,"admin");
            ResultSet rs = ps.executeQuery();
           while (rs.next()) {
            return rs.getString("Benutzername").equals(user) && rs.getString("passwort").equals(pass);              
       
           }
        return true;
       }