Java tutorial
import javafx.application.Application; import javafx.beans.value.ChangeListener; import javafx.beans.value.ObservableValue; import javafx.geometry.Insets; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.control.RadioButton; import javafx.scene.control.Toggle; import javafx.scene.control.ToggleGroup; import javafx.scene.layout.HBox; import javafx.scene.layout.VBox; import javafx.stage.Stage; public class Main extends Application { public static void main(String[] args) { launch(args); } @Override public void start(Stage stage) { Scene scene = new Scene(new Group()); stage.setWidth(250); stage.setHeight(150); final ToggleGroup group = new ToggleGroup(); RadioButton rb1 = new RadioButton("A"); rb1.setToggleGroup(group); rb1.setUserData("A"); RadioButton rb2 = new RadioButton("B"); rb2.setToggleGroup(group); rb2.setUserData("B"); RadioButton rb3 = new RadioButton("C"); rb3.setToggleGroup(group); rb3.setUserData("C"); group.selectedToggleProperty().addListener(new ChangeListener<Toggle>() { public void changed(ObservableValue<? extends Toggle> ov, Toggle old_toggle, Toggle new_toggle) { if (group.getSelectedToggle() != null) { System.out.println(group.getSelectedToggle().getUserData().toString()); } } }); HBox hbox = new HBox(); VBox vbox = new VBox(); vbox.getChildren().add(rb1); vbox.getChildren().add(rb2); vbox.getChildren().add(rb3); vbox.setSpacing(10); hbox.getChildren().add(vbox); hbox.setSpacing(50); hbox.setPadding(new Insets(20, 10, 10, 20)); ((Group) scene.getRoot()).getChildren().add(hbox); stage.setScene(scene); stage.show(); } }