@Override
public void paint(Graphics g) {
Dimension size = getSize();
Graphics2D g2 = (Graphics2D) g.create();
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.5f));
g2.fillRect(0, 0, (int) size.getWidth(), (int) size.getHeight());
super.paint(g2);
g2.dispose();
}
