public class Slider

public void showForm() {
  Form hi = new Form("Star Slider", new BoxLayout(BoxLayout.Y_AXIS));
  hi.add(FlowLayout.encloseCenter(createStarRankSlider()));
  hi.show();
}

private void initStarRankStyle(Style s, Image star) {
    s.setBackgroundType(Style.BACKGROUND_IMAGE_TILE_BOTH);
    s.setBorder(Border.createEmpty());
    s.setBgImage(star);
    s.setBgTransparency(0);
}

private Slider createStarRankSlider() {
    Slider starRank = new Slider();
    starRank.setEditable(true);
    starRank.setMinValue(0);
    starRank.setMaxValue(10);
    Font fnt = Font.createTrueTypeFont("native:mainLight", "native:mainLight").
            derive(Display.getInstance().convertToPixels(5, true), Font.STYLE_PLAIN);
    Style s = new Style(0xffff33, 0, fnt, (byte)0);
    Image fullStar = FontImage.createMaterial(FontImage.MATERIAL_STAR, s).toImage();
    s.setOpacity(100);
    s.setFgColor(0);
    Image emptyStar = FontImage.createMaterial(FontImage.MATERIAL_STAR, s).toImage();
    initStarRankStyle(starRank.getSliderEmptySelectedStyle(), emptyStar);
    initStarRankStyle(starRank.getSliderEmptyUnselectedStyle(), emptyStar);
    initStarRankStyle(starRank.getSliderFullSelectedStyle(), fullStar);
    initStarRankStyle(starRank.getSliderFullUnselectedStyle(), fullStar);
    starRank.setPreferredSize(new Dimension(fullStar.getWidth() * 5, fullStar.getHeight()));
    return starRank;
}

Form hi = new Form("Download Progress", new BorderLayout());
Slider progress = new Slider();
Button download = new Button("Download");
download.addActionListener((e) -> {
    ConnectionRequest cr = new ConnectionRequest("https://www.codenameone.com/img/blog/new_icon.png", false);
    SliderBridge.bindProgress(cr, progress);
    NetworkManager.getInstance().addToQueueAndWait(cr);
    if(cr.getResponseCode() == 200) {
        hi.add(BorderLayout.CENTER, new ScaleImageLabel(EncodedImage.create(cr.getResponseData())));
        hi.revalidate();
    }
});
hi.add(BorderLayout.SOUTH, progress).add(BorderLayout.NORTH, download);
hi.show();