Joda time - all mondays between two dates

Question

I am using Joda time api in a Spring 3.0 project for the very first time. Now I have a start and end date and I want to get the date for all mondays between these two dates. How can I do this ?

I have no idea where to start, can someone please advise. I looked at theis post Joda Time: How to get dates of weekdays on some date interval? and it offered some sort of guidance but its still somewhat vague due to little experience with joda.

Answer 1

LocalDate startDate = new LocalDate(2011, 11, 8);
LocalDate endDate = new LocalDate(2012, 5, 1);

LocalDate thisMonday = startDate.withDayOfWeek(DateTimeConstants.MONDAY);

if (startDate.isAfter(thisMonday)) {
    startDate = thisMonday.plusWeeks(1); // start on next monday
} else {
    startDate = thisMonday; // start on this monday
}

while (startDate.isBefore(endDate)) {
    System.out.println(startDate);
    startDate = startDate.plusWeeks(1);
}

Answer 2

I recently developed Lamma which is designed to solve this exact use case:

Dates.from(2011, 11, 8).to(2011, 12, 30).byWeek().on(DayOfWeek.MONDAY).build();

and you will get a List<Date> of:

Date(2011,11,14)
Date(2011,11,21)
Date(2011,11,28)
Date(2011,12,5)
Date(2011,12,12)
Date(2011,12,19)
Date(2011,12,26)