我的JavaFx應(yīng)用程序中有此方法來創(chuàng)建RadioButton。private HBox createModesRadios(IntegerProperty count, Mode... modes) {    ToggleGroup group = new ToggleGroup();    HBox result = new HBox(50);    result.setPadding(new Insets(20, 0, 0, 0));    result.setAlignment(Pos.CENTER);    for (Mode mode : modes) {        RadioButton radio = new RadioButton(mode.getText());        radio.setToggleGroup(group);        radio.setUserData(mode);        result.getChildren().add(radio);    }    if (modes.length > 0) {        group.selectToggle((Toggle) result.getChildren().get(0));        count.bind(Bindings.createIntegerBinding(() -> ((Mode) group.getSelectedToggle().getUserData()).getCount(), group.selectedToggleProperty()));        } else {        count.set(0);    }    return result;}它initialize()通過以下方式在Controller類中的方法中調(diào)用HBox radioBox = createModesRadios(elementCount, modes);。這是助手類模式：public class Mode {private final String text;private final int count;public Mode(String text, int count) {    this.text = text;    this.count = count;}public String getText() {    return text;}public int getCount() {    return count;}}如何保存用戶選擇的按鈕？將所選按鈕String的mode.getText()方法存儲在變量中會很棒。另外，我想重新設(shè)置先前選擇的按鈕，以便應(yīng)用程序可以記住選擇。