Specify the date format in XMLGregorianCalendar

Question

I want to use a Date in XMLGregorianCalendar format for sending to a web service  The web service expects information in yyyy-dd-mm format  I use the below code to create an XMLGregorianCalendar and send it to web service   Date dob   null  DateFormat df   new SimpleDateFormat  dd MM yyyy     try       XMLGregorianCalendar date2      dob   df parse  13 06 1983         GregorianCalendar c   new GregorianCalendar        c setTimeInMillis dob getTime         date2   DatatypeFactory newInstance   newXMLGregorianCalendar c       System out println date2     catch DatatypeConfigurationException e           TODO Auto-generated catch block     e printStackTrace      catch ParseException e           TODO Auto-generated catch block     e printStackTrace        Unfortunately I always get the date as 1983-06-13T00 00 00 000-04 00  Time is also getting included in the output  Is it possible to get only the date  Could you please help me

User · Answer

you don t need to specify a  SimpleDateFormat   it s simple  You must do specify the constant  DatatypeConstants FIELD UNDEFINED  where you don t want to show  GregorianCalendar cal   new GregorianCalendar    cal setTime new Date     XMLGregorianCalendar xmlDate   DatatypeFactory newInstance   newXMLGregorianCalendarDate cal get Calendar YEAR   cal get Calendar MONTH  1  cal get Calendar DAY OF MONTH   DatatypeConstants FIELD UNDEFINED

User · Answer

Yeah Got it     Date dob null  DateFormat df new SimpleDateFormat  dd MM yyyy    dob df parse   13 06 1983     GregorianCalendar cal   new GregorianCalendar    cal setTime dob   XMLGregorianCalendar xmlDate   DatatypeFactory newInstance   newXMLGregorianCalendarDate cal get Calendar YEAR   cal get Calendar MONTH  1  cal get Calendar DAY OF MONTH   DatatypeConstants FIELD UNDEFINED     This will give it in correct format

User · Answer

There isn   t really an ideal conversion  but I would like to supply a couple of options   java time  First  you should use LocalDate from java time  the modern Java date and time API  for parsing and holding your date  Avoid Date and SimpleDateFormat since they have design problems and also are long outdated  The latter in particular is notoriously troublesome       DateTimeFormatter originalDateFormatter   DateTimeFormatter ofPattern  dd MM uuuu         String dateString    13 06 1983       LocalDate date   LocalDate parse dateString  originalDateFormatter       System out println date     The output is      1983-06-13   Do you need to go any further  LocalDate toString   produces the format you asked about   Format and parse  Assuming that you do require an XMLGregorianCalendar the first and easy option for converting is       XMLGregorianCalendar xmlDate   DatatypeFactory newInstance                newXMLGregorianCalendar date toString         System out println xmlDate        1983-06-13   Formatting to a string and parsing it back feels like a waste to me  but as I said  it   s easy and I don   t think that there are any surprises about the result being as expected   Pass year  month and day of month individually      XMLGregorianCalendar xmlDate   DatatypeFactory newInstance                newXMLGregorianCalendarDate date getYear    date getMonthValue                        date getDayOfMonth    DatatypeConstants FIELD UNDEFINED     The result is the same as before  We need to make explicit that we don   t want a time zone offset  this is what DatatypeConstants FIELD UNDEFINED specifies   In case someone is wondering  both LocalDate and XMLGregorianCalendar number months the way humans do  so there is no adding or subtracting 1   Convert through GregorianCalendar  I only show you this option because I somehow consider it the official way  convert LocalDate to ZonedDateTime  then to GregorianCalendar and finally to XMLGregorianCalendar       ZonedDateTime dateTime   date atStartOfDay ZoneOffset UTC       GregorianCalendar gregCal   GregorianCalendar from dateTime       XMLGregorianCalendar xmlDate   DatatypeFactory newInstance                newXMLGregorianCalendar gregCal       xmlDate setTime DatatypeConstants FIELD UNDEFINED  DatatypeConstants FIELD UNDEFINED              DatatypeConstants FIELD UNDEFINED  DatatypeConstants FIELD UNDEFINED       xmlDate setTimezone DatatypeConstants FIELD UNDEFINED     I like the conversion itself since we neither need to use strings nor need to pass individual fields  with care to do it in the right order   What I don   t like is that we have to pass a time of day and a time zone offset and then wipe out those fields manually afterwards

User · Answer

This is an easy way for any format  Just change it to required format string  XMLGregorianCalendar gregFmt   DatatypeFactory newInstance   newXMLGregorianCalendar new SimpleDateFormat  yyyy-MM-dd T HH mm ss   format new Date      System out println gregFmt

User · Answer

Much simpler using only SimpleDateFormat  without passing all the parameters individual       String FORMATER    yyyy-MM-dd T HH mm ss Z         DateFormat format   new SimpleDateFormat FORMATER        Date date   new Date        XMLGregorianCalendar gDateFormatted           DatatypeFactory newInstance   newXMLGregorianCalendar format format date      Full example here   Note  This is working only to remove the last 2 fields  milliseconds and timezone or to remove the entire time component using formatter yyyy-MM-dd

[java] Specify the date format in XMLGregorianCalendar

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