Date sample rev.2

gistfile1.txt

import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.List;

/**
 * Created by vine on 15. 5. 27..
 */
public class Main {
    public static void main(String args[]) {
        String pattern = "yyyyMMdd";
        String thisTimeZone = DateTimeZone.UTC.getID(); //"UTC";
        DateTimeFormatter formatter = DateTimeFormat.forPattern(pattern)
                .withZone(DateTimeZone.forID(thisTimeZone));

        DateTime dateTime = formatter.parseDateTime("20160101").plusMonths(-1);
        System.out.println(dateTime.dayOfMonth().getMaximumValue());

        List<String> days = new ArrayList<String>();
        for (int i = 0; i < dateTime.dayOfMonth().getMaximumValue(); ++i) {
            DateTime targetDateTime = dateTime.plusDays(i);
            days.add(formatter.print(targetDateTime));
        }

        System.out.println(days);
    }
}