Convert string to date then format the date

Question

I am formatting a string to a date using the code  String start dt    2011-01-01    DateFormat formatter   new SimpleDateFormat  YYYY-MM-DD     Date date    Date formatter parse start dt     But how do I convert the date from YYYY-MM-DD format to MM-DD-YYYY format

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String start dt    2011-01-01      Input String      SimpleDateFormat formatter   new SimpleDateFormat  yyyy-MM-dd       Existing Pattern     Date getStartDt   formatter parse start dt     Returns Date Format according to existing pattern      SimpleDateFormat simpleDateFormat   new SimpleDateFormat  MM-dd-yyyy      New Pattern     String formattedDate   simpleDateFormat format getStartDt      Format given String to new pattern      System out println formattedDate     outputs  01-01-2011

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String myFormat   quot yyyy-MM-dd quot   String finalString    quot  quot   try   DateFormat formatter   new SimpleDateFormat  quot yyyy MMM dd quot    Date date    Date  formatter  parse  quot 2015 Oct 09 quot    SimpleDateFormat newFormat   new SimpleDateFormat myFormat   finalString  newFormat  format date    newDate setText finalString     catch  Exception e

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Use SimpleDateFormat format Date    String start dt    2011-01-01   DateFormat formatter   new SimpleDateFormat  yyyy-MM-DD     Date date    Date formatter parse start dt   SimpleDateFormat newFormat   new SimpleDateFormat  MM-dd-yyyy    String finalString   newFormat format date

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tl dr  LocalDate parse   2011-01-01              format  DateTimeFormatter ofPattern   MM-dd-uuuu         java time  The other Answers are now outdated  The troublesome old date-time classes such as java util Date  java util Calendar  and java text SimpleDateFormat are now legacy  supplanted by the java time classes    ISO 8601  The input string 2011-01-01 happens to comply with the ISO 8601 standard formats for date-time text  The java time classes use these standard formats by default when parsing generating strings  So no need to specify a formatting pattern   LocalDate  The LocalDate class represents a date-only value without time-of-day and without time zone   LocalDate ld   LocalDate parse   2011-01-01        Generate a String in the same format by calling toString   String output   ld toString          2011-01-01   DateTimeFormatter  To parse generate other formats  use a DateTimeFormatter   DateTimeFormatter f   DateTimeFormatter ofPattern   MM-dd-uuuu      String output   ld format  f          01-01-2011     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   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   The ThreeTenABP project adapts ThreeTen-Backport  mentioned above  for Android specifically  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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String start dt    2011-01-31    DateFormat parser   new SimpleDateFormat  yyyy-MM-dd     Date date    Date  parser parse start dt    DateFormat formatter   new SimpleDateFormat  MM-dd-yyyy     System out println formatter format date      Prints  01-31-2011

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Tested this code  java text DateFormat formatter   new java text SimpleDateFormat  MM-dd-yyyy    java util Date newDate   new java util Date    System out println formatter format newDate       http   download oracle com javase 1 5 0 docs api java text SimpleDateFormat html

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In one line   String date new SimpleDateFormat  MM-dd-yyyy   format new SimpleDateFormat  yyyy-MM-dd   parse  2011-01-01       Where   String date new SimpleDateFormat  FinalFormat   format new SimpleDateFormat  InitialFormat   parse  StringDate

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Currently  i prefer using this methods  String data    quot Date from Register   quot           if  android os Build VERSION SDK INT  gt   android os Build VERSION CODES O       Verify that OS Version is  gt  API 26  OREO              DateTimeFormatter formatter   DateTimeFormatter ofPattern  quot yyyyMMdd quot        Origin format             LocalDate localDate   LocalDate parse capitalModels get position  getDataServer    formatter      Parse String  from server  to LocalDate             DateTimeFormatter formatter1   DateTimeFormatter ofPattern  quot dd MM yyyy quot       Output format             data    quot Data de Registro   quot  formatter1 format localDate      Output             Toast makeText holder itemView getContext    data  Toast LENGTH LONG  show             else     Same resolutions  just use legacy methods to oldest android OS versions                  SimpleDateFormat format   new SimpleDateFormat  quot yyyyMMdd quot  Locale getDefault                 try                   Date date   format parse capitalModels get position  getDataServer                     SimpleDateFormat formatter   new SimpleDateFormat  quot dd MM yyyy quot   Locale getDefault                     data    quot Date from Register   quot  formatter format date                 catch  ParseException e                    e printStackTrace

[java] Convert string to date then format the date

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