code: public Date getDay(int group) {
  		String value = matcher.group(group);
  		if (value == null) {
  			return null;
  		}
  		Date date = FlatFileUtils.getDay(value);
  		if (date == null) {
  			error("FF.2", value);
  		}
  		return date;
  	}
docs: Returns the day given a string in format dd-MMM-yyyy.