public void start(Stage primaryStage) throws Exception {

    primaryStage.setTitle("title");



    Button btn1 = new Button("new");
    Button btn2 = new Button ("continue");

    btn1.setOnAction(this);
    btn2.setOnAction(this);



    VBox vb = new VBox (btn1, btn2);
    vb.setSpacing(10);
    vb.setPadding(new Insets(20));


    BorderPane root = new BorderPane();
    root.setBottom(vb);

    Scene scene = new Scene (root, 300, 250);
    primaryStage.setScene(scene);
    primaryStage.show();
}


@Override
public void handle(ActionEvent event) {

    if (event.getSource()==btn1) {
        System.out.println("new!");
    } else if (event.getSource()==btn2) {
        System.out.println("continue!");
    }
}