[hardwired]

removed the white part of images in label
Do you mean how to remove the color white from an image? You use something like this

Code:

    private BufferedImage convertToTransparent(BufferedImage src,
                                               Color transparentColor) {
        int w = src.getWidth();
        int h = src.getHeight();
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsConfiguration gc = ge.getDefaultScreenDevice().getDefaultConfiguration();
        BufferedImage dest = gc.createCompatibleImage(w, h, Transparency.BITMASK);
        int trgb;
        if (transparentColor != null) {
            trgb = transparentColor.getRGB() | 0xff000000;
        } else {
            trgb = 0xffff00ff;
        }
        // Copy pixels a scan line at a time
        int buf[] = new int[w];
        for (int y = 0; y < h; y++) {
            src.getRGB(0, y, w, 1, buf, 0, w);
            for (int x = 0; x < w; x++) {
                if (buf[x] == trgb) {
                    buf[x] = 0;
                }
            }
            dest.setRGB(0, y, w, 1, buf, 0, w);
        }
        return dest;
    }

which you can find in your sdk (1.5) at:
sdk1.5/src/com/sun/java/swing/plaf/windows/XPStyle