Wsrtjtyk

I'm making a simple graphical desktop application for image management and, I'm using JavaFX, in addition to its sceneBuilder. The idea is, at pushing a button a FileChooser appears, to choose the image and to show a new window with all the background image on it. The problem is that in doing it. I get an error that I can not identify.

Edit: I discovered that if I open the image in the same window there is no error.

My code:

public void OpenWindow(ActionEvent event) throws IOException {

        Parent root = FXMLLoader.load(getClass().getResource("Window2.fxml"));

        Scene secondScene = new Scene(root,800,800);

        Stage newWindow = new Stage();

        newWindow.setTitle("Imagen");

        newWindow.setScene(secondScene);

        newWindow.setX(100);

        newWindow.setY(100);

        newWindow.show();

        /////// Open Window //////

        FileChooser fileChooser = new FileChooser();

        FileChooser.ExtensionFilter extFilterJPG = new FileChooser.ExtensionFilter(" JPG", "*.JPG");

        fileChooser.getExtensionFilters().addAll(extFilterJPG);

        File file = fileChooser.showOpenDialog(null);



        try {

            BufferedImage bufferedImage = ImageIO.read(file);

            Image image = SwingFXUtils.toFXImage(bufferedImage, null);

            myImageView.setImage(image);



        }catch(IOException ex) {

            System.out.println(ex.getMessage());

        }





    }

Edit: (SOLUTION WAS CREATE A NEW FMXL LOADER)
`

    FXMLLoader loader = new FXMLLoader(getClass().getResource("SecondController.fxml"));

    Parent root = (Parent) loader.load();

    SecondController secController = loader.getController();

    secController.nuevaImagen(imagen);

    secController.mostrarInfo(imagen); // Hacer que el controlador de la imagen muestre la info

    secController.addMainController(this);

    Stage stage = new Stage();

    stage.setScene(new Scene(root));

    stage.setTitle(datosImagenActiva.titulo);

    stage.show();`

You need to pass a Stage object to fileChooser.showOpenDialog. Try this:

File file = fileChooser.showOpenDialog(newWindow);

Edit: This is false as pointed out by @Slaw