Creating JavaFX app with Material Design

@Override
    public void start(Stage primaryStage) {
        //A StackPane as root for the Scene
        StackPane root=new StackPane();
        /***This method applies the needed styles to the Stage and creates the needed Scene object.
        It returns the created Scene object, so you can assign it to a variable if you need to do something
        else with it. It receives the Stage, a Pane object which will act as root layout, and the wished width and height***/
        MaterialDesign.getMaterialScene(primaryStage,root, 640, 480);
        //This sets the app to stop completely when a Close is requested, like when you press the default Exit button
        MaterialDesign.setExitOnClose(true);
    
        /***A MaterialEditableLayout is a generic Material Layout which contains a Status Bar with the
        actual time, an Action Bar with a title and Menu Button, and the space where you will be able to add
        more elements***/
        MaterialEditableLayout layout=new  MaterialEditableLayout(false) {
            //Specify in this method what you want to happen when you click the Menu button.
            @Override
            public void onMenuButtonPressed(Button button) {
                //A MaterialToast object is used for notifications, or whenever you want to display a Popup message to the user.
                new MaterialToast("I'm a toast!").unhide();
            }
        };
        //This sets the text in the Action Bar
        layout.setTitle("Material JavaFX");

        //This adds the layout object to the Scene's root Pane object.
        root.getChildren().add(layout);

        //Finally, we set the title to the stage, which is the Window title, and show it. These are JavaFX Stage methods.
        primaryStage.setTitle("Material Showcase");
        primaryStage.show();
    }