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java Programming Glossary: calendar.setHow to get first day of a given week number in Java http://stackoverflow.com/questions/2109145/how-to-get-first-day-of-a-given-week-number-in-java Calendar calendar Calendar.getInstance calendar.clear calendar.set Calendar.WEEK_OF_YEAR week calendar.set Calendar.YEAR year Now.. calendar.clear calendar.set Calendar.WEEK_OF_YEAR week calendar.set Calendar.YEAR year Now get the first day of week. Date date..
Start and end date of a current month http://stackoverflow.com/questions/3083781/start-and-end-date-of-a-current-month Date begining end Calendar calendar getCalendarForNow calendar.set Calendar.DAY_OF_MONTH calendar.getActualMinimum Calendar.DAY_OF_MONTH.. calendar.getTime Calendar calendar getCalendarForNow calendar.set Calendar.DAY_OF_MONTH calendar.getActualMaximum Calendar.DAY_OF_MONTH.. Calendar calendar GregorianCalendar.getInstance calendar.setTime new Date return calendar private static void setTimeToBeginningOfDay..
How to round time to the nearest quarter hour in java? http://stackoverflow.com/questions/3553964/how-to-round-time-to-the-nearest-quarter-hour-in-java new Date Calendar calendar Calendar.getInstance calendar.setTime whateverDateYouWant int unroundedMinutes calendar.get Calendar.MINUTE.. for the last line only valid if the calendar is lenient calendar.set Calendar.MINUTE unroundedMinutes mod Improvements If you want.. be exact you will also have to truncate the smaller fields calendar.set Calendar.SECOND 0 calendar.set Calendar.MILLISECOND 0 You can..
C# DateTime.Ticks equivalent in Java http://stackoverflow.com/questions/3706306/c-sharp-datetime-ticks-equivalent-in-java to the millisecond Calendar calendar Calendar.getInstance calendar.set Calendar.MILLISECOND 0 Clear the millis part. Silly API. calendar.set.. Calendar.MILLISECOND 0 Clear the millis part. Silly API. calendar.set 2010 8 14 0 0 0 Note that months are 0 based Date date calendar.getTime.. UTC Calendar calendar Calendar.getInstance utc calendar.setTime date System.out.println calendar Note that this constructs..
http://stackoverflow.com/questions/8742830/conversion-of-date 2009 12 Dec Calendar calendar Calendar.getInstance calendar.setTime new SimpleDateFormat yyyy MM .parse oldString Yes month.. Yes month name is ignored but we don't need this. calendar.set Calendar.DATE calendar.getActualMaximum Calendar.DATE String..
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