@Override
protected void paintComponent(Graphics graphics) {
int width = getWidth() - getInsets().left - getInsets().right;
int height = getHeight() - getInsets().top - getInsets().bottom;
Graphics2D g2d = (Graphics2D) graphics;
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setColor(backgroundColor);
g2d.fillRoundRect(getInsets().left, getInsets().top, width, height, 8, 8);
super.paintComponent(
graphics); // To change body of overridden methods use File | Settings | File Templates.
}
