code: private static String convertTimeElementToString(Long secondsFromMidnight) {
          return String.format(HOURS_OUTPUT_FORMAT, secondsFromMidnight / SECONDS_IN_MINUTE / MINUTES_IN_HOUR)
                  + TIME_DELIMETER
                  + String.format(MINUTES_OUTPUT_FORMAT, secondsFromMidnight / SECONDS_IN_MINUTE % MINUTES_IN_HOUR)
                  + TIME_DELIMETER
                  + String.format(SECONDS_OUTPUT_FORMAT, secondsFromMidnight % SECONDS_IN_MINUTE);
      }
docs: The function to convert time without a date (hour, minute, second) from the sas7bdat file format
  (which is the number of seconds elapsed from the midnight) into a string of the format set by the constants:
  {@link DataWriterUtil#HOURS_OUTPUT_FORMAT}, {@link DataWriterUtil#MINUTES_OUTPUT_FORMAT},
  {@link DataWriterUtil#SECONDS_OUTPUT_FORMAT}, and {@link DataWriterUtil#TIME_DELIMETER}.
  
  @param secondsFromMidnight the number of seconds elapsed from the midnight.
  @return the string of time in the format set by constants.