Calendar.getTime() fails with java.lang.IllegalArgumentException:MINUTE for Asia/Singapore timezone
calendar, date, java, timezone
Solution
Your code starts with the date 1/1/1982 and sets both HOUR_OF_DAY and MINUTE to 0.
But there was no 12:00:00 AM on January 1, 1982, in Singapore. After 11:59:59 PM on December 31, 1981, Singapore jumped ahead by half an hour to 12:30 AM. It had previously been at UTC+7:30, but moved to the whole-hour zone of UTC+8.
Sources: Singapore Standard Time and timeanddate.com. See also Why is Singapore in the "wrong" time zone? for a brief history of time in Singapore.
Problem
Why is this code failing? The purpose was to remove the time part. ``` String dateStr = "1982-01-01"; String timeZoneID = "Asia/Singapore"; DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd"); Date date = dateFormat.parse(dateStr); Calendar calendar = Calendar.getInstance(); calendar.setTimeZone(TimeZone.getTimeZone(timeZoneID)); calendar.setLenient(false); calendar.setTime(date); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.SECOND, 0); calendar.set(Calendar.MILLISECOND, 0); System.out.println(calendar.getTime()); ``` The error message: ``` Exception in thread "main" java.lang.IllegalArgumentException: MINUTE at java.util.GregorianCalendar.computeTime(GregorianCalendar.java:2482) at java.util.Calendar.updateTime(Calendar.java:2265) at java.util.Calendar.getTimeInMillis(Calendar.java:1049) at java.util.Calendar.getTime(Calendar.java:1022) at Prog.main(Prog.java:31) ``` It works fine for the following input: - dateStr = "1982-01-01", timeZoneID = "Europe/Berlin" - dateStr = "1981-01-01", timeZoneID = "Asia/Singapore" - dateStr = "1982-01-01", timeZoneID = "Asia/Seoul"