public static boolean isInt(String strInt) {
        boolean blnResult = false;
        log.debug(String.format("method start String[strInt:%s]", strInt));
        if (strInt != null) {
            blnResult = Pattern.matches("^-?[0-9]*$", strInt);
        }
        log.debug(String.format("method stop return:boolean[%s]", blnResult));
        return blnResult;
    }