Get all Fridays in a date Range in Java

Question

I recently came across a task where i have to get all Fridays in a date range. I wrote a small piece of code and was surprised see some strange behaviour.

Below is m

Answer 1

public static List<Date> getWeekNumberList(Date currentMonthDate) {
    List<Date> dates = new ArrayList<>(10);
    Calendar startCalendar = Calendar.getInstance();
    startCalendar.setTime(currentMonthDate);
    startCalendar.set(Calendar.DAY_OF_MONTH,
            startCalendar.getActualMinimum(Calendar.DAY_OF_MONTH));
    Calendar endCalendar = Calendar.getInstance();
    endCalendar.setTime(currentMonthDate);
    endCalendar.set(Calendar.DAY_OF_MONTH,
            endCalendar.getActualMaximum(Calendar.DAY_OF_MONTH));

    Date enddate = endCalendar.getTime();
    while (startCalendar.getTime().before(enddate)) {
        if (startCalendar.get(Calendar.DAY_OF_WEEK) == Calendar.MONDAY) {
            Date result = startCalendar.getTime();
            dates.add(result);
            startCalendar.add(Calendar.WEEK_OF_MONTH, 1);
        } else {

            startCalendar.add(Calendar.DAY_OF_MONTH, 1);
        }
    }
    return dates;
}