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