Java Utililty Methods Swing Icon

BufferedImage bi = new BufferedImage(18, 18, BufferedImage.TYPE_INT_ARGB_PRE);
Graphics2D g2 = bi.createGraphics();
g2.setBackground(Color.red);
g2.clearRect(0, 0, bi.getWidth(), bi.getHeight());
g2.setColor(Color.white);
g2.setStroke(new BasicStroke(2));
GeneralPath x = new GeneralPath();
x.moveTo(0, 0);
...

return getIcon(EMPTY_ICON);

return new ImageIcon("resources/images/folder.png");

Icon icon;
if (CACHE.containsKey("file-dir")) {
    icon = CACHE.get("file-dir");
} else {
    File temp = new File(System.getProperty("java.io.tmpdir") + File.separator + "icon");
    temp.mkdirs();
    icon = FileSystemView.getFileSystemView().getSystemIcon(temp);
    CACHE.put("file-dir", icon);
...

BufferedImage img = new BufferedImage(baseIcon_.getIconWidth(), baseIcon_.getIconHeight(),
        BufferedImage.TYPE_INT_ARGB);
Graphics g = img.getGraphics();
baseIcon_.paintIcon(TEMP, g, 0, 0);
g.dispose();
for (int i = 0; i < img.getWidth(); i++) {
    for (int j = 0; j < img.getHeight(); j++) {
        Color rgba = new Color(img.getRGB(i, j), true);
...

try {
    return new ImageIcon(baseclass.getResource("images/" + name));
} catch (NullPointerException e) {
    e.printStackTrace();
    return null;

return (new ImageIcon(clazz.getResource(path)));

return new ImageIcon(Thread.currentThread().getContextClassLoader().getResource(path));

URL url = Thread.currentThread().getContextClassLoader().getResource(resource);
if (url == null)
    return null;
return new ImageIcon(url);

if (index >= 0 && index < icons.size()) {
    return icons.get(index);
return null;