BufferedImage to JavaFX image

Question

I have an image I screenshot from the primary monitor and I want to add it to a Java FX ImageView as so:

@FXML
protected ImageView screenshot()          


        

Answer 1

You can use

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

Answer 2

normally the best choice is Image image = SwingFXUtils.toFXImage(capture, null); in java9 or bigger.... but in matter of performance in javafx, also in devices with low performance, you can use this technique that will do the magic, tested in java8

private static Image convertToFxImage(BufferedImage image) {
    WritableImage wr = null;
    if (image != null) {
        wr = new WritableImage(image.getWidth(), image.getHeight());
        PixelWriter pw = wr.getPixelWriter();
        for (int x = 0; x < image.getWidth(); x++) {
            for (int y = 0; y < image.getHeight(); y++) {
                pw.setArgb(x, y, image.getRGB(x, y));
            }
        }
    }

    return new ImageView(wr).getImage();
}