public int compareTo(ClassTimeInfo time) {
int cmp = getDate().compareTo(time.getDate());
if (cmp != 0) return cmp;
cmp = getTimePattern().compareTo(time.getTimePattern());
if (cmp != 0) return cmp;
cmp = getDayCode() - time.getDayCode();
if (cmp != 0) return cmp;
cmp = getStartSlot() - time.getStartSlot();
if (cmp != 0) return cmp;
return hashCode() - time.hashCode();
}
