code: public static String getTime(long epochTimestamp,
              DateTimeFormatter dateTimeFormatter, ZoneId zoneId) {
          return ZonedDateTime
                  .ofInstant(Instant.ofEpochMilli(epochTimestamp), zoneId)
                  .format(dateTimeFormatter);
      }
docs: Gets time.
  
  @param epochTimestamp    the epoch timestamp
  @param dateTimeFormatter the date time formatter
  @param zoneId            the zone id
  @return the time