Zdobądź ostatni piątek miesiąca w Javie
LocalDate now = LocalDate.now();
LocalDate lastFriday = now.with(TemporalAdjusters.lastInMonth(DayOfWeek.FRIDAY));
vmxes
LocalDate now = LocalDate.now();
LocalDate lastFriday = now.with(TemporalAdjusters.lastInMonth(DayOfWeek.FRIDAY));Calendar cal = Calendar.getInstance();
cal.set(year,month-1,day);
int nd = cal.get(Calendar.DAY_OF_WEEK);LocalDate now = LocalDate.now();
LocalDate lastDay = now.with(TemporalAdjusters.lastDayOfMonth());Calendar cal = Calendar.getInstance();
cal.set(Calendar.DATE, cal.getActualMaximum(Calendar.DATE));
Date lastDayOfMonth = cal.getTime();