Java tutorial
import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.RadioButton; import javafx.scene.control.ToggleGroup; import javafx.scene.layout.HBox; import javafx.stage.Stage; public class Main extends Application { @Override public void start(Stage stage) { HBox root = new HBox(); Scene scene = new Scene(root, 300, 150); stage.setScene(scene); stage.setTitle(""); ToggleGroup group = new ToggleGroup(); RadioButton button1 = new RadioButton("select first"); button1.setToggleGroup(group); button1.setSelected(true); RadioButton button2 = new RadioButton("select second"); button2.setToggleGroup(group); root.getChildren().add(button1); root.getChildren().add(button2); scene.setRoot(root); stage.show(); } public static void main(String[] args) { launch(args); } }