Java format yyyy-MM-dd T HH mm ss SSSz to yyyy-mm-dd HH mm ss

Question

I m trying to format a date in yyyy-MM-dd T HH mm ss SSSz format to yyyy-mm-dd HH mm ss  which should be easy but I can t get it to work   A date that has to be parsed is in the form of  2012-10-01T09 45 00 000 02 00  Now i use this simple  date formatter to format it   SimpleDateFormat sdf   new SimpleDateFormat  yyyy-MM-dd T HH mm ss SSSz   Locale FRANCE     yet this gives an output similar to 2012-10-01T09 45 00 000UTC 00 00   I ve also tried to use  yyyy-MM-dd T HH mm ss SSSZ  as pattern and  yyyy-MM-ddHH mm ss   The latter returns a date in the form of 2012-10-01T09 45 00 close  but not there yet   I figured substringing the T away would be a bit messy and creates overhead for no reason  thus what would be the proper way to format these dates   To illustrate I would like to convert 2012-10-01T09 45 00 000 02 00 into 2012-10-01 09 45 00  Cheers

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String dateStr    2016-09-17T08 14 03 00 00   String s   dateStr replace  Z     00 00    s   s substring 0  22    s substring 23   Date date   new SimpleDateFormat  yyyy-MM-dd T HH mm ssZ   parse s   Timestamp createdOn   new Timestamp date getTime     mcList setCreated on createdOn     Java 7 added support for time zone descriptors according to ISO 8601  This can be use in Java 7

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SimpleDateFormat sdf   new SimpleDateFormat  yyyy-MM-dd T HH mm ss    SimpleDateFormat output   new SimpleDateFormat  yyyy-MM-dd HH mm ss    Date d   sdf parse time   String formattedTime   output format d     This works  You have to use two SimpleDateFormats  one for input and one for output  but it will give you just what you are wanting

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I was trying to format the date string received from a JSON response e g  2016-03-09T04 50 00-0800  to yyyy-MM-dd  So here s what I tried and it worked and helped me assign the formatted date string a calendar widget    String DATE FORMAT I    yyyy-MM-dd T HH mm ss   String DATE FORMAT O    yyyy-MM-dd     SimpleDateFormat formatInput   new SimpleDateFormat DATE FORMAT I   SimpleDateFormat formatOutput   new SimpleDateFormat DATE FORMAT O    Date date   formatInput parse member getString  date     String dateString   formatOutput format date     This worked  Thanks

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java time  We have new technology for this problem  the java time framework built into Java 8 and later   Your input string is in standard ISO 8601 format  That standard is used by default in the java time classes for parsing generating textual representations of date-time values   OffsetDateTime odt   OffsetDateTime parse   2012-10-01T09 45 00 000 02 00       Your Question suggests you want to truncate to a whole second   OffsetDateTime odtTruncatedToWholeSecond   odt truncatedTo  ChronoUnit SECONDS      It seems you want to omit the offset and time zone info  The pre-defined formatter DateTimeFormatter ISO LOCAL DATE TIME does that   And apparently you want to use a space in the middle rather than the standard T  You could define your own formatter for this  but I would just do a string manipulation to replace the T with a SPACE   String output   odtTruncatedToWholeSecond format  DateTimeFormatter ISO LOCAL DATE TIME   replace   T             Simply String Manipulations  As the comments on the Question suggest  strictly speaking you can accomplish your goal by working only with strings and not converting to any date-time objects  But I provide this Answer here assuming you may have other business logic to work with these date-time values         About java time  The java time framework is built into Java 8 and later  These classes supplant the troublesome old legacy date-time classes such as java util Date  Calendar   amp  SimpleDateFormat   The Joda-Time project  now in maintenance mode  advises migration to the java time classes   To learn more  see the Oracle Tutorial  And search Stack Overflow for many examples and explanations  Specification is JSR 310   You may exchange java time objects directly with your database  Use a JDBC driver compliant with JDBC 4 2 or later  No need for strings  no need for java sql   classes   Where to obtain the java time classes     Java SE 8  Java SE 9  and later   Built-in   Part of the standard Java API with a bundled implementation  Java 9 adds some minor features and fixes   Java SE 6 and Java SE 7   Much of the java time functionality is back-ported to Java 6  amp  7 in ThreeTen-Backport   Android   Later versions of Android bundle implementations of the java time classes  For earlier Android  the ThreeTenABP project adapts ThreeTen-Backport  mentioned above   See How to use ThreeTenABP          The ThreeTen-Extra project extends java time with additional classes  This project is a proving ground for possible future additions to java time  You may find some useful classes here such as Interval  YearWeek  YearQuarter  and more

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If you really gotta be fast  not that I believe you do    char   chars   sourceDate toCharArray    chars 10         String targetDate   new String chars  0  19

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Gooye if it s possible to use Joda Time in your project then this code works for me   String dateStr    2012-10-01T09 45 00 000 02 00   String customFormat    yyyy-MM-dd HH mm ss    DateTimeFormatter dtf   ISODateTimeFormat dateTime    LocalDateTime parsedDate   dtf parseLocalDateTime dateStr    String dateWithCustomFormat   parsedDate toString DateTimeFormat forPattern customFormat    System out println dateWithCustomFormat

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I have a case where I am transforming a legacy DB2 z os database timestamp  formatted as   quot yyyy-MM-dd T HH mm ss SSSZ quot   into a SqlServer 2016 datetime2  formatted as   quot yyyy-MM-dd HH mm ss SSS  field that is handled by our Spring Hibernate Entity Manager instance  in this case  the OldRevision Table   In the Class  I define the date as the java util type  and write the setter and getter in the normal way  Then  When handling the data  the code I have handling the data related to this question looks like this  OldRevision revision   new OldRevision    String oldRevisionDateString  oldRevisionData getString  quot originalRevisionDate quot    quot  quot    Date oldDateFormat   new SimpleDateFormat  quot yyyy-MM-dd T hh mm ss SSSZ quot    oldDateFormat parse oldRevisionDateString   SimpleDateFormat newDateFormat   new SimpleDateFormat  quot yyyy-MM-dd HH mm ss SSS quot    newDateFormat setTimeZone TimeZone getTimeZone  quot EST quot     Date finalFormattedDate  newDateFormat parse newDateFormat format oldDateFormat    revision setOriginalRevisionDate finalFormattedDate   em persist revision    A simpler way to do the same case is  SimpleDateFormat newDateFormat   new SimpleDateFormat  quot yyyy-MM-dd HH mm ss SSS quot    newDateFormat setTimeZone TimeZone getTimeZone  quot EST quot     revision setOriginalRevisionDate          newDateFormat parse newDateFormat format                  new SimpleDateFormat  quot yyyy-MM-dd T hh mm ss SSSZ quot                            parse rs getString  quot originalRevisionDate quot    quot  quot

[java] Java format yyyy-MM-dd'T'HH:mm:ss.SSSz to yyyy-mm-dd HH:mm:ss

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