How can I convert a timestamp from yyyy-MM-ddThh mm ss SSSZ format to MM dd yyyy hh mm ss SSS format From ISO8601 to UTC

Question

I want to convert the timestamp 2011-03-10T11 54 30 207Z to 10 03 2011 11 54 30 207  How can I do this  I want to convert ISO8601 format to UTC and then that UTC should be location aware  Please help  String str date  2011-03-10T11 54 30 207Z   DateFormat formatter   Date date   formatter   new SimpleDateFormat  dd MM yyyy hh mm ss SSS    date    Date formatter parse str date   System out println  output     date      Exception  java text ParseException  Unparseable date   2011-03-10T11 54 30 207Z

User · Answer

Yes  you can use SimpleDateFormat like this   SimpleDateFormat formatter  FORMATTER  formatter   new SimpleDateFormat  yyyy-MM-dd T HH mm ss SSS Z     String oldDate    2011-03-10T11 54 30 207Z   Date date   formatter parse oldDate substring 0  24    FORMATTER   new SimpleDateFormat  dd-MMM-yyyy HH mm ss SSS    System out println  OldDate-- gt   oldDate   System out println  NewDate-- gt   FORMATTER format date      Output OldDate-- 2011-03-10T11 54 30 207Z NewDate-- 10-Mar-2011 11 54 30 207

User · Answer

Enter the original date into a Date object and then print out the result with a DateFormat  You may have to split up the string into smaller pieces to create the initial Date object  if the automatic parse method does not accept your format   Pseudocode   Date inputDate   convertYourInputIntoADateInWhateverWayYouPrefer inputString   DateFormat outputFormat   new SimpleDateFormat  MM dd yyyy hh mm ss SSS    String outputString   outputFormat format inputDate

User · Answer

Firstly  you need to be aware that UTC isn t a format  it s a time zone  effectively  So  converting from ISO8601 to UTC  doesn t really make sense as a concept   However  here s a sample program using Joda Time which parses the text into a DateTime and then formats it  I ve guessed at a format you may want to use - you haven t really provided enough information about what you re trying to do to say more than that  You may also want to consider time zones    do you want to display the local time at the specified instant  If so  you ll need to work out the user s time zone and convert appropriately   import org joda time    import org joda time format     public class Test       public static void main String   args            String text    2011-03-10T11 54 30 207Z           DateTimeFormatter parser   ISODateTimeFormat dateTime            DateTime dt   parser parseDateTime text            DateTimeFormatter formatter   DateTimeFormat mediumDateTime            System out println formatter print dt

User · Answer

Hope this Helps   public String getSystemTimeInBelowFormat         String timestamp   new SimpleDateFormat  yyyy-mm-dd  T  HH MM SS mmm-HH SS   format new Date         return timestamp

User · Answer

You might want to have a look at joda time  which is a little easier to use than the java native date tools  and provides many common date patterns pre-built   In response to comments  more detail   To do this using Joda time  you need two DateTimeFormatters - one for your input format to parse your input and one for your output format to print your output   Your input format is an ISO standard format  so Joda time s ISODateTimeFormat class has a static method with a parser for it already  dateHourMinuteSecondMillis   Your output format isn t one they have a pre-built formatter for  so you ll have to make one yourself using DateTimeFormat   I think DateTimeFormat forPattern  mm dd yyyy kk mm ss SSS    should do the trick   Once you have your two formatters  call the parseDateTime   method on the input format and the print method on the output format to get your result  as a string   Putting it together should look something like this  warning  untested    DateTimeFormatter input   ISODateTimeFormat dateHourMinuteSecondMillis    DateTimeFormatter output   DateTimeFormat forPattern  mm dd yyyy kk mm ss SSS    String outputFormat   output print  input parseDate inputFormat

User · Answer

Use DateFormat   Sorry  but the brevity of the question does not warrant a longer or more detailed answer

[java] How can I convert a timestamp from yyyy-MM-ddThh:mm:ss:SSSZ format to MM/dd/yyyy hh:mm:ss.SSS format? From ISO8601 to UTC

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