[FIXED] JavaFX: window is blank and does not show SceneBuilder updates


I’m learning JavaFX and I’m trying to make a graphical app with SceneBuilder, but the window is blank with nothing on it. I added some buttons to the window on SceneBuilder, but I can’t see them when I run the app. The app is based on MVC:


package application;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.AnchorPane;

public class Main extends Application {
    public void start(Stage stage) {
        try {
            FXMLLoader loader = new FXMLLoader(Main.class.getResource("Test.fxml"));
            AnchorPane root = (AnchorPane) loader.load();
            Scene scene = new Scene(root);
        } catch(Exception e) {
    public static void main(String[] args) {


package application;

import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.layout.AnchorPane;

public class Controller {
    private AnchorPane base;
    public void setBackgroundRed(ActionEvent event) {
        base.setStyle("-fx-background-color: red;");
    public void setBackgroundGreen(ActionEvent event)   {
        base.setStyle("-fx-background-color: green;");

That’s what I made on SceneBuilder, and what the GUI looks like: SceneBuilder GUI

That’s what I get instead, when I run the application: blank window

Edit: if I close and reopen SceneBuilder the GUI is ok.


You’re using Eclipse IDE right?

I think the issue is Eclipse. In fact, Eclipse by default doesn’t refersh project resources automatically. Therefore, if you update and save your .fxml file from SceneBuilder, it goes out-of-sync inside the IDE, until you refresh the resources (right click on Project folder > Refresh, or F5).

You can make Eclipse refresh resources automatically by selecting the option Refresh using native hooks or polling: Window > Preferences > General > Workspace > refresh using native hooks or polling.

That issue had been widely discussed in this thread.

Answered By – mikyll98

Answer Checked By – Marie Seifert (Easybugfix Admin)

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