JAVA FX：如何在 fxml 视图的同一场景中设置菜单栏

Question

I wouldlke to add my menubar from my borderpane but the problem actually is I loaded my view (FXML) on primary stage. I wouldike to add my menubar at top of my view :

Parent root = FXMLLoader.load(getClass().getResource("/view/home/home.fxml"));

// Create MenuBar
MenuBar menuBar = new MenuBar();

// Create menus
Menu fileMenu = new Menu("File");
Menu editMenu = new Menu("Edit");
Menu helpMenu = new Menu("Help");

BorderPane rootTop = new BorderPane();
rootTop.setTop(menuBar);

primaryStage.setScene(new Scene(root, 900, 600));
primaryStage.setScene(new Scene(rootTop, 900, 600));

primaryStage.show();

Answer 1

This code:

primaryStage.setScene(new Scene(root, 900, 600));
primaryStage.setScene(new Scene(rootTop, 900, 600));

sets the scene two times. The second Scene overrides the first one, so you won't be able to see your loaded FXML.

What you can do is embed your FXML in your BorderPane :

BorderPane rootTop = new BorderPane();
rootTop.setTop(menuBar);
rootTop.setCenter(root);

primaryStage.setScene(new Scene(rootTop, 900, 600));

primaryStage.show();