![]() Calendar.getInstance(TimeZone zone, Locale aLocale).Calendar.getInstance(): return a Calendar instance based on the current time in the default time zone with the default locale.Instead, you use the static method Calendar.getInstance() to instantiate an implementation sub-class. manipulating these calendar fields, such as getting the date of the previous week, roll forward by 3 days.Ĭalendar provides internationalization support.Ĭalendar is a abstract class, and you cannot use the constructor to create an instance.maintaining a set of calendar fields such as YEAR, MONTH, DAY_OF_MONTH, HOUR, MINUTE, SECOND, MILLISECOND and.Calendar and DateFormat support locale (you need to consider locale only if you program is to be run in many countries concurrently). SimpleDateForamt is a subclass of DateFormat.ĭate is legacy class, which does not support internationalization. Use to format a Date (form Date to text) and parse a date string (from text to Date). ![]() Use class if you need to extract year, month, day, hour, minute, and second, or manipulating these field (e.g., 7 days later, 3 weeks earlier). You could use SimpleDateFormat to control the date/time display format.Date class is sufficient if you just need a simple timestamp. ![]() ("Format 2: " + dateFormatter.format(now)) ĭateFormatter = new SimpleDateFormat("EEEE, MMMM d, yyyy") ("Format 1: " + dateFormatter.format(now)) ĭateFormatter = new SimpleDateFormat("E yyyy.MM.dd 'at' hh:mm:ss a zzz") SimpleDateFormat dateFormatter = new SimpleDateFormat("E, y-M-d 'at' h:m:s a z") 3M: (in text xxx), >3M: (in full text full) M (month): M (in number), MM (in number with leading zero) E (day of week): 3E or fewer (in text xxx), >3E (in full text) ("toString(): " + now) // dow mon dd hh:mm:ss zzz yyyy // SimpleDateFormat can be used to control the date/time display format: You can use SimpleDateFormat to control the display format. The Date's toString() method has a fixed date/time display format. Take note that although Date is represented based on the absolute epoch, the toString() displays the local time, according to the default time zone.
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