SimpleDateFormat function parse(String s) gives wrong date

Question

As an input I have Date object(for example, exDate=Fri Aug 01 00:00:00 EEST 2014) that must be formated. After the parsing of the date, I get wrong date.

            SimpleDateFormat sdf = new SimpleDateFormat(
                    "dd-MMM-YYYY hh.mm.ss.SSSSSSSSS aa", Locale.ENGLISH);
            String dateStart = sdf.format(exDate);
            Date dateF = sdf.parse(dateStart);

dateStart will be equal to

01-Aug-2014 12.00.00.000000000 AM

and the resut, dateF will be equal to

Sun Dec 29 00:00:00 EET 2013

So, after the parsing of a string with date, the result is wrong. Maybe, somebody know the source of the problem? Or another way to format date in another SimpleDateFormat?

have a look here http://stackoverflow.com/questions/4772425/format-date-in-java — Marino, Aug 20 '14 at 16:44
`YYYY` doesn't mean what you think it does. Try `yyyy`, and read the docs to see what `YYYY` really means. — Jon Skeet, Aug 20 '14 at 16:44
Additionally, in future it would help if you'd provide a short but *complete* program that we could just copy, compile, run. — Jon Skeet, Aug 20 '14 at 16:46
@ElliottFrisch - but there are a lot more nanoseconds. `S` x 9 would imply nanoseconds. — Hot Licks, Aug 20 '14 at 17:04
It's curious -- why are you formatting a date and then turning around and parsing the formatted value? What do you expect that to accomplish? — Hot Licks, Aug 20 '14 at 17:06

score 1 · Accepted Answer · edited May 23 '17 at 12:01

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The problem is the YYYY which means:

 Y   Week year;

The actual year, which is what you are looking for would be yyyy.

I really recommend that you go in the link above to see the full list.

You should also replace the milliseconds to .SSS as you can't get more precise than that.

edited May 23 '17 at 12:01

Community

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answered Aug 20 '14 at 16:53

Mansueli

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Or go to the [ultimate authority](http://www.unicode.org/reports/tr35/tr35-31/tr35-dates.html#Date_Format_Patterns). (Though I don't know if SDF honors all those variations.) – Hot Licks Aug 20 '14 at 17:08

SimpleDateFormat function parse(String s) gives wrong date

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