時刻部分を除いて日付を比較するにはどうすればよいですか?

DateTime first = ...;
DateTime second = ...;

LocalDate firstDate = first.toLocalDate();
LocalDate secondDate = second.toLocalDate();

return firstDate.compareTo(secondDate);

return DateTimeComparator.getDateOnlyInstance().compare(first, second);

Calendar firstDate = Calendar.getInstance();
Calendar secondDate = Calendar.getInstance();

firstDate.setTime(first);
secondDate.setTime(second);

firstDate.set(Calendar.HOUR_OF_DAY, 0);
firstDate.set(Calendar.MINUTE, 0);
firstDate.set(Calendar.SECOND, 0);
firstDate.set(Calendar.MILLISECOND, 0);

secondDate.set(Calendar.HOUR_OF_DAY, 0);
secondDate.set(Calendar.MINUTE, 0);
secondDate.set(Calendar.SECOND, 0);
secondDate.set(Calendar.MILLISECOND, 0);

return firstDate.compareTo(secondDate);

dependencies {
  ...
  implementation 'joda-time:joda-time:2.9.9'
}

DateTimeComparator dateTimeComparator = DateTimeComparator.getDateOnlyInstance();

Date myDateOne = ...;
Date myDateTwo = ...;

int retVal = dateTimeComparator.compare(myDateOne, myDateTwo);