Removing time from a Date object

Question

I want to remove time from Date object   DateFormat df  String date  df   new SimpleDateFormat  dd MM yyyy    d   eventList get 0  getStartDate       I m getting the date using this method date   df format d      Converting date in  dd MM yyyy  format   But when I m converting this date  which is in String format  it is appending time also   I don t want time at all  What I want is simply  21 03 2012

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java util Date represents a date time down to milliseconds   You don t have an option but to include a time with it   You could try zeroing out the time  but then timezones and daylight savings will come into play--and that can screw things up down the line  e g  21 03 2012 0 00 GMT is 20 03 2012 PDT    What you might want is a java sql Date to represent only the date portion  though internally it still uses ms

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A bit of a fudge but you could use java sql Date  This only stored the date part and zero based time  midnight   Calendar c   Calendar getInstance    c set Calendar YEAR  2011   c set Calendar MONTH  11   c set Calendar DATE  5   java sql Date d   new java sql Date c getTimeInMillis     System out println  date is      d   DateFormat df   new SimpleDateFormat  dd MM yyyy    System out println  formatted date is      df format d      gives  date is  2011-12-05 formatted date is  05 12 2011   Or it might be worth creating your own date object which just contains dates and not times  This could wrap java util Date and ignore the time parts of it

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You can also manually change the time part of date and format in  dd mm yyyy  pattern according to your requirement     public static Date getZeroTimeDate Date changeDate            Date returnDate new Date changeDate getTime  - 24 60 60 1000            return returnDate          If the return value is not working then check for the context parameter in web xml  eg       lt context-param gt            lt param-name gt javax faces DATETIMECONVERTER DEFAULT TIMEZONE IS SYSTEM TIMEZONE lt  param-name gt           lt param-value gt true lt  param-value gt       lt  context-param gt

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Can t believe no one offered this shitty answer with all the rest of them  It s been deprecated for decades    SuppressWarnings  deprecation           Date hitDate   new Date        hitDate setHours 0       hitDate setMinutes 0       hitDate setSeconds 0

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The quick answer is    No  you are not allowed to do that  Because that is what Date use for   From javadoc of Date       The class Date represents a specific instant in time  with millisecond precision    However  since this class is simply a data object  It dose not care about how we describe it  When we see a date 2012 01 01 12 05 10 321  we can say it is 2012 01 01  this is what you need  There are many ways to do this   Example 1   by manipulating string  Input string   2012 01 20 12 05 10 321  Desired output string   2012 01 20  Since the yyyy MM dd are exactly what we need  we can simply manipulate the string to get the result   String input    2012 01 20 12 05 10 321   String output   input substring 0  10       Output   2012 01 20   Example 2   by SimpleDateFormat  Input string   2012 01 20 12 05 10 321  Desired output string   01 20 2012  In this case we want a different format   String input    2012 01 20 12 05 10 321   DateFormat inputFormatter   new SimpleDateFormat  yyyy MM dd HH mm ss SSS    Date date   inputFormatter parse input    DateFormat outputFormatter   new SimpleDateFormat  MM dd yyyy    String output   outputFormatter format date      Output   01 20 2012   For usage of SimpleDateFormat  check SimpleDateFormat JavaDoc

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Don t try to make it hard just follow a simple way  date is a string where your date is saved  String s2 date substring 0 date length  -11     now print the value of s2  it will reduce your string length and you will get only date part

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You can write that for example   private Date TruncarFecha Date fechaParametro  throws ParseException       String fecha         DateFormat outputFormatter   new SimpleDateFormat  MM dd yyyy        fecha  outputFormatter format fechaParametro       return outputFormatter parse fecha

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String substring int startIndex  int endIndex    In other words you know your string will be 10 characers long so you would do   FinalDate   date substring 0 9

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You can remove the time part from java util Date by setting the hour  minute  second and millisecond values to zero   import java util Calendar  import java util Date   public class DateUtil        public static Date removeTime Date date            Calendar cal   Calendar getInstance            cal setTime date           cal set Calendar HOUR OF DAY  0           cal set Calendar MINUTE  0           cal set Calendar SECOND  0           cal set Calendar MILLISECOND  0           return cal getTime

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What you want is impossible   A Date object represents an  absolute  moment in time  You cannot  remove the time part  from it  When you print a Date object directly with System out println date   it will always be formatted in a default format that includes the time  There is nothing you can do to change that   Instead of somehow trying to use class Date for something that it was not designed for  you should look for another solution  For example  use SimpleDateFormat to format the date in whatever format you want   The Java date and calendar APIs are unfortunately not the most well-designed classes of the standard Java API  There s a library called Joda-Time which has a much better and more powerful API   Joda-Time has a number of special classes to support dates  times  periods  durations  etc  If you want to work with just a date without a time  then Joda-Time s LocalDate class would be what you d use

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If you are using Java 8   use  java time LocalDate type instead   LocalDate now   LocalDate now    System out println now toString       The output   2019-05-30   https   docs oracle com javase 8 docs api java time LocalDate html

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you could try something like this   import java text    import java util    public class DtTime   public static void main String args      String s  Format formatter    Date date   new Date      formatter   new SimpleDateFormat  dd MM yyyy      s   formatter format date     System out println s             This will give you output as21 03 2012  Or you could try this if you want the output as 21 Mar  2012  import java text    import java util    public class DtTime   public static void main String args          Date date new Date    String df DateFormat getDateInstance   format date   System out println df

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Apache Commons DateUtils has a  truncate  method that I just used to do this and I think it will meet your needs  It s really easy to use   DateUtils truncate dateYouWantToTruncate  Calendar DAY OF MONTH     DateUtils also has a host of other cool utilities like  isSameDay    and the like  Check it out it  It might make things easier for you

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What about this       Date today   new Date        SimpleDateFormat sdf   new SimpleDateFormat  dd MM yyyy         today   sdf parse sdf format today

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May be the below code may help people who are looking for zeroHour of the day        Date todayDate   new Date        GregorianCalendar todayDate G   new GregorianCalendar        gcd setTime currentDate       int  Day      todayDate GC get GregorianCalendar DAY OF MONTH       int  Month    todayDate GC get GregorianCalendar MONTH       int  Year     todayDate GC get GregorianCalendar YEAR        GregorianCalendar newDate   new GregorianCalendar  Year  Month  Day 0 0 0       zeroHourDate   newDate getTime        long zeroHourDateTime   newDate getTimeInMillis      Hope this will be helpful

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In addtition to what   jseals has already said  I think the org apache commons lang time DateUtils class is probably what you should be looking at   It s method   truncate Date date int field  worked very well for me   JavaDocs   https   commons apache org proper commons-lang javadocs api-2 6 org apache commons lang time DateUtils html truncate java util Date  int   Since you needed to truncate all the time fields you can use    DateUtils truncate new Date   Calendar DAY OF MONTH

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Date dateWithoutTime       new Date myDate getYear   myDate getMonth   myDate getDate       This is deprecated  but the fastest way to do it

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The correct class to use for a date without time of day is LocalDate  LocalDate is a part of java time  the modern Java date and time API   So the best thing you can do is if you can modify the getStartDate method you are using to return a LocalDate       DateTimeFormatter dateFormatter   DateTimeFormatter              ofLocalizedDate FormatStyle SHORT               withLocale Locale forLanguageTag  en-IE          LocalDate d   eventList get 0  getStartDate       We   re now getting a LocalDate using this method     String dateString   d format dateFormatter       System out println dateString     Example output      21 03 2012   If you cannot change the getStartDate  you may still be able to add a new method returning the type that we want  However  if you cannot afford to do that just now  convert the old-fashioned Date that you get  I assume java util Date        d   eventList get 0  getStartDate       I m getting the old-fashioned Date using this method     LocalDate dateWithoutTime   d toInstant                atZone ZoneId of  Asia Kolkata                 toLocalDate      Please insert the time zone that was assumed for the Date  You may use ZoneId systemDefault   for the JVM   s time zone setting  only this setting can be changed at any time from other parts of your program or other programs running in the same JVM   The java util Date class was what we were all using when this question was asked 6 years ago  no  not all  I was  and we were many   java time came out a couple of years later and has replaced the old Date  Calendar  SimpleDateFormat and DateFormat  Recognizing that they were poorly designed  Furthermore  a Date despite its name cannot represent a date  It   s a point in time  What the other answers do is they round down the time to the start of the day     midnight     in the JVM   s default time zone  It doesn   t remove the time of day  only sets it  typically to 00 00  Change your default time zone     as I said  even another program running in the same JVM may do that at any time without notice     and everything will break  often    Link  Oracle tutorial  Date Time explaining how to use java time

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Another way to work out here is to use java sql Date as sql Date doesn t have time associated with it  whereas java util Date always have a timestamp  Whats catching point here is java sql Date extends java util Date  therefore java util Date variable can be a reference to java sql Date without time  and to java util Date of course with timestamp

[java] Removing time from a Date object?

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