public static Icon resizeIcon(final Icon icon, final int newWidth, final Component targetComponent) {
	try {
		final BufferedImage image = iconToImage(icon, targetComponent);
		final int w = icon.getIconWidth(), h = icon.getIconHeight();
		if (w == newWidth) return icon;
		final int newHeight = (int) round(h / (w / ((double) newWidth)), 0);

		final BufferedImage bi = new BufferedImage(newWidth, newHeight, BufferedImage.TYPE_INT_ARGB);
		final Graphics2D g = (Graphics2D) bi.getGraphics();
		final HashMap<Key, Object> hints = new HashMap<Key, Object>(7);
		hints.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
		hints.put(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
		hints.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
		hints.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
		hints.put(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);
		hints.put(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_DISABLE);
		hints.put(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
		g.addRenderingHints(hints);
		g.drawImage(image, 0, 0, newWidth, newHeight, null);
		return new ImageIcon(bi);
	} catch (final Exception e) {
		return icon;
	}
}

public static BufferedImage iconToImage(final Icon icon, final Component targetComponent) {
	final int w = icon.getIconWidth();
	final int h = icon.getIconHeight();
	GraphicsConfiguration gc = targetComponent.getGraphicsConfiguration();
	if (gc == null) gc = Frame.getFrames()[0].getGraphicsConfiguration();
	final BufferedImage image = gc.createCompatibleImage(w, h, Transparency.TRANSLUCENT);
	final Graphics2D g = image.createGraphics();
	icon.paintIcon(targetComponent, g, 0, 0);
	g.dispose();
	return image;
}