java text ParseException Unparseable date

Question

I am getting a parsing exception while I am trying the following code       String date  Sat Jun 01 12 53 10 IST 2013       SimpleDateFormat sdf new SimpleDateFormat  MMM d  yyyy HH mm ss        Date currentdate      currentdate sdf parse date       System out println currentdate     Exception       Exception in thread  main  java text ParseException  Unparseable date   Sat Jun 01 12 53 10 IST 2013    at com ibm icu text DateFormat parse DateFormat java 510    Input  Sat Jun 01 12 53 10 IST 2013  Expected output  Jun 01 2013 12 53 10  How to solve this

User · Answer

Pattern is wrong       String date  Sat Jun 01 12 53 10 IST 2013       SimpleDateFormat sdf new SimpleDateFormat  E MMM dd hh mm ss Z yyyy        Date currentdate      currentdate sdf parse date       System out println currentdate

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String date  Sat Jun 01 12 53 10 IST 2013           SimpleDateFormat sdf new SimpleDateFormat  E MMM dd HH mm ss z yyyy            Date currentdate sdf parse date           SimpleDateFormat sdf2 new SimpleDateFormat  MMM dd yyyy HH mm ss            System out println sdf2 format currentdate

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Update your format to   SimpleDateFormat sdf new SimpleDateFormat  E MMM dd hh mm ss Z yyyy

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Your pattern does not correspond to the input string at all    It is not surprising that it does not work  This would probably work better   SimpleDateFormat sdf   new SimpleDateFormat  EE MMM dd HH mm ss z yyyy                                               Locale ENGLISH     Then to print with your required format you need a second SimpleDateFormat   Date parsedDate   sdf parse date   SimpleDateFormat print   new SimpleDateFormat  MMM d  yyyy HH mm ss    System out println print format parsedDate      Notes    you should include the locale as if your locale is not English  the day name might not be recognised IST is ambiguous and can lead to problems so you should use the proper time zone name if possible in your input

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Your formatting pattern fails to match the input string  as noted by other Answers  Your input format is terrible   You are using troublesome old date-time classes that were supplanted years ago by the java time classes    ISO 8601  Instead a format such as yours  use ISO 8601 standard formats for exchanging date-time values as text   The java time classes use the standard ISO 8601 formats by default when parsing generating strings   Proper time zone name  Specify a proper time zone name in the format of continent region  such as America Montreal  Africa Casablanca  or Pacific Auckland  Never use the 3-4 letter abbreviation such as EST or IST as they are not true time zones  not standardized  and not even unique       Your IST could mean Iceland Standard Time  India Standard Time  Ireland Standard Time  or others  The java time classes are left to merely guessing  as there is no logical solution to this ambiguity   java time  The modern approach uses the java time classes   Define a formatting pattern to match your input strings   String input    Sat Jun 01 12 53 10 IST 2013   DateTimeFormatter f   DateTimeFormatter ofPattern   EEE MMM dd HH mm ss z uuuu    Locale US    ZonedDateTime zdt   ZonedDateTime parse  input   f         zdt toString    2013-06-01T12 53 10Z Atlantic Reykjavik    If your input was not intended for Iceland  you should pre-parse the string to adjust to a proper time zone name  For example  if you are certain the input was intended for India  change IST to Asia Kolkata    String input    Sat Jun 01 12 53 10 IST 2013  replace   IST     Asia Kolkata     DateTimeFormatter f   DateTimeFormatter ofPattern   EEE MMM dd HH mm ss z uuuu    Locale US    ZonedDateTime zdt   ZonedDateTime parse  input   f         zdt toString    2013-06-01T12 53 10 05 30 Asia Kolkata      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  Java SE 10  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   lt 26   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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I found simple solution to get current date without any parsing error   Calendar calendar  calendar   Calendar getInstance    String customDate        calendar get Calendar YEAR     -     calendar get Calendar MONTH    1     -    calendar get Calendar DAY OF MONTH

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String date  Sat Jun 01 12 53 10 IST 2013    SimpleDateFormat sdf new SimpleDateFormat  MMM d  yyyy HH mm ss      This patterns does not tally with your input String which occurs the exception   You need to use following pattern to get the work done   E MMM dd HH mm ss z yyyy   Following code will help you to skip the exception   SimpleDateFormat is used       String date  Sat Jun 01 12 53 10 IST 2013      Input String      SimpleDateFormat simpleDateFormat new SimpleDateFormat  E MMM dd HH mm ss z yyyy       Existing Pattern      Date currentdate simpleDateFormat parse date      Returns Date Format       SimpleDateFormat simpleDateFormat1 new SimpleDateFormat  MMM dd yyyy HH mm ss       New Pattern      System out println simpleDateFormat1 format currentdate       Format given String to new pattern         outputs  Jun 01 2013 12 53 10

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Check your Pattern  DD-MMM-YYYY  and the input for the parse  29-11-2018   method  Input to the parse method should follow   DD-MMM-YYYY i e  21-AUG-2019  In My Code   String pattern    DD-MMM-YYYY   SimpleDateFormat simpleDateFormat   new SimpleDateFormat pattern        try           startDate   simpleDateFormat parse  29-11-2018      here no pattern match          endDate   simpleDateFormat parse  28-AUG-2019      Ok        catch  ParseException e               TODO Auto-generated catch block         e printStackTrace

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I needed to add a ParsePosition expression to the parse method of class SimpleDateFormat   simpledateformat parse mydatestring  new ParsePosition 0

[java] java.text.ParseException: Unparseable date

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