Wheel wants to be re-invented

private static Boolean isLastDayOfMonth(Date curDate) {
    final List<Integer> monthsWithThirtyOneDays = new List<Integer> { 1, 3, 5, 7, 8, 10, 12};
    final List<Integer> monthsWithThirtyDays = new List<Integer> {4, 6, 9, 11};

    if (monthsWithThirtyOneDays.contains(curDate.month())) {
        return curDate.day() == 31;
    } else if (monthsWithThirtyDays.contains(curDate.month())) {
        return curDate.day() == 30;
    } else { // February
        return Date.isLeapYear(curDate.year()) ?
                curDate.day() == 29 :
                curDate.day() == 28;
    }
}