Check the date format of value

 public boolean isValidDateFormat(String format, String value) {
        Date date = null;
        try {
            SimpleDateFormat sdf = new SimpleDateFormat(format);
            date = sdf.parse(value);
            if (!value.equals(sdf.format(date))) {
                date = null;
            }
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return date != null;
    }