public Map<Vacation, Integer> getCalDays(List<Vacation> vacations) {
Map<Vacation, Integer> calDays = new HashMap<Vacation, Integer>(vacations.size());
for (Vacation vacation : vacations) {
Integer diffInDays =
DateTimeUtil.getDiffInDays(vacation.getBeginDate(), vacation.getEndDate());
calDays.put(vacation, diffInDays);
}
return calDays;
}
