Java 随机生成16进制颜色

    public static String getRandColorCode() {        String r, g, b;        Random random = new Random();        r = Integer.toHexString(random.nextInt(256)).toUpperCase();        g = Integer.toHexString(random.nextInt(256)).toUpperCase();        b = Integer.toHexString(random.nextInt(256)).toUpperCase();        r = r.length() == 1 ? "0" + r : r;        g = g.length() == 1 ? "0" + g : g;        b = b.length() == 1 ? "0" + b : b;        return "#" + r + g + b;    }