JavaFx单选按钮如何在两个单选按钮之间切换，如图所示。我是javafx新手

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.RadioButton;
import javafx.scene.control.ToggleGroup;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class RadioButtonExample extends Application {

    @Override
    public void start(Stage primaryStage) {
        RadioButton radioButton1 = new RadioButton("选项1");
        RadioButton radioButton2 = new RadioButton("选项2");

        ToggleGroup toggleGroup = new ToggleGroup();
        radioButton1.setToggleGroup(toggleGroup);
        radioButton2.setToggleGroup(toggleGroup);

        toggleGroup.selectedToggleProperty().addListener((observable, oldValue, newValue) -> {
            if (toggleGroup.getSelectedToggle() != null) {
                RadioButton selectedRadioButton = (RadioButton) toggleGroup.getSelectedToggle();
                System.out.println("选择了：" + selectedRadioButton.getText());
            }
        });

        VBox vbox = new VBox(10);
        vbox.setPadding(new Insets(10));
        vbox.getChildren().addAll(radioButton1, radioButton2);

        Scene scene = new Scene(vbox, 200, 150);
        primaryStage.setScene(scene);
        primaryStage.setTitle("RadioButton示例");
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}