code: private void init(final long qty, final TimeUnit unit) {
          long millis = unit.convert(qty);
          seconds = TimeUnit.MILLISECOND.convert(millis, TimeUnit.SECOND) % 60;
          minutes = TimeUnit.MILLISECOND.convert(millis, TimeUnit.MINUTE) % 60;
          hours = TimeUnit.MILLISECOND.convert(millis, TimeUnit.HOUR) % 24;
          days = TimeUnit.MILLISECOND.convert(millis, TimeUnit.DAY);
      }
docs: Initializes the object.
  
  @param qty the amount
  @param unit the time unit