* <p>
     * Usage example:
     * </p>
     *
     * <pre>
     * StringUtil.camelize("USER_ID")  = "UserId"
     * </pre>
     *
     * @param s
     *            the text
     * @return the resulting string
     */
    public static String camelize(String s) {
        if (s == null) {
            return null;
        }
        s = s.toLowerCase();