public void paintBorder(final Graphics g, final int x, final int y, final int w, final int h) {
((Graphics2D) g)
.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g.setColor(focusColor);
rect.setRoundRect(x + 0.6, y + 0.6, w - 1.2, h - 1.2, outsideRadius, outsideRadius);
area.reset();
area.add(new Area(rect));
rect.setRoundRect(x + 2, y + 2, w - 4, h - 4, insideRadius, insideRadius);
area.subtract(new Area(rect));
((Graphics2D) g).fill(area);
}
