Re: Unusual (for me) GWT compile messages

My Comparators all look something like:

class ReservationComparator implements Comparator<Reservation> {
@Override
public int compare(Reservation o1, Reservation o2) {
return Integer.compare(o1.getReservationID(), o2.getReservationID());
}
}

Where  Reservation.getReservationID() returns a simple "int" or 

class BookingIDComparator implements Comparator<String> {
@Override
public int compare(String o1, String o2) {
return Integer.compare(Integer.parseInt(o1), Integer.parseInt(o2));
}
}

Where I am comparing stringified ints.  Actually the third instance is more complex because the sorting criteria of the list-of-object looks at dates and then ints.

class BookingComparator implements Comparator<Booking> {
@Override
public int compare(Booking o1, Booking o2) {
int result = 0;

if ((result = o1.getTimeBookingStart().compareTo(
o2.getTimeBookingStart())) == 0) {
if ((result = o1.getTimeBookingEnd().compareTo(
o2.getTimeBookingEnd())) == 0) {
result = Integer.compare(o1.getBookingID(),
o2.getBookingID());
}
}
return result;
}
}

that is Date.compare, Date.compare then Integer.compare of two returned ints. 

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