Joda-Time uses the ISO standard Monday to Sunday week. It does not have the ability to obtain the first day of week, nor to return the day of week index based on any day other than the standard Monday. Finally, weeks are always calculated wrt ISO rules.
It’s not hard to use the time tuple method and still retain the microseconds: >>> t = datetime.datetime.now() >>> t datetime.datetime(2011, 11, 5, 11, 26, 15, 37496) >>> time.mktime(t.timetuple()) + t.microsecond / 1E6 1320517575.037496
The length of a year is (more or less) 365.242196 days. So we have to subtract, more or less, a quarter of a day to make it fit : 365.242196 – 0.25 = 364.992196 (by adding 1 day in 4 years) : but oops, now it’s too small!! lets add a hundreth of a day … Read more
CalDAV (Calendaring Extensions to WebDAV, documented in RFC-4791) uses the iCalendar (Internet Calendaring and Scheduling Core Object Specification, documented in RFC-5545, not to be confused with Apple’s iCal) format for the data exchange. iCalendar accommodates non-standard properties that start with a “X-” prefix. X-PUBLISHED-TTL is the property that maps to the recommended update interval for … Read more
In brief: DateFormat formatter = new SimpleDateFormat(“MM/dd/yy”); try { Date date = formatter.parse(“01/29/02”); } catch (ParseException e) { e.printStackTrace(); } See SimpleDateFormat javadoc for more. And to turn it into a Calendar, do: Calendar calendar = Calendar.getInstance(); calendar.setTime(date);
try Calendar c = Calendar.getInstance(); // this takes current date c.set(Calendar.DAY_OF_MONTH, 1); System.out.println(c.getTime()); // this returns java.util.Date Updated (Since Java 8): import java.time.LocalDate; LocalDate todaydate = LocalDate.now(); System.out.println(“Months first date in yyyy-mm-dd: ” +todaydate.withDayOfMonth(1));
From http://docs.oracle.com/javase/7/docs/api/java/util/Calendar.html#HOUR: Calendar.HOUR = Field number for get and set indicating the hour of the morning or afternoon. HOUR is used for the 12-hour clock. E.g., at 10:04:15.250 PM the HOUR is 10. Calendar.HOUR_OF_DAY = Field number for get and set indicating the hour of the day. HOUR_OF_DAY is used for the 24-hour clock. E.g., … Read more
This is the problem to start with: Calendar cal = Calendar.getInstance(TimeZone.getTimeZone(“EST”)); The 3-letter abbreviations should be wholeheartedly avoided in favour of TZDB zone IDs. EST is Eastern Standard Time – and Standard time never observes DST; it’s not really a full time zone name. It’s the name used for part of a time zone. (Unfortunately … Read more
EST is UTC – 5 hours. America/New_York is EST in the winter and E*D*T in the summer, so right now New York is UTC – 4 hours.
There is a getTime() method (unsure why it’s not called getDate). Edit: Just realized you need a java.sql.Date. One of the answers which use cal.getTimeInMillis() is what you need.