public void Connexion(ActionEvent actionEvent) {

        Parent root;
        try {
            root = FXMLLoader.load(getClass().getClassLoader().getResource("menu.fxml"));
            Stage stage = new Stage();
            stage.setTitle("dadouliCards");
            stage.setScene(new Scene(root, 700, 400));
            stage.show();
            // Hide this current window (if this is what you want)
            //  ((Node)(event.getSource())).getScene().getWindow().hide();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }