Java program to get the current date without timestamp

Question

I need a Java program to get the current date without a timestamp   Date d   new Date      gives me date and timestamp   But I need only the date  without a timestamp  I use this date to compare with another date object that does not have a timestamp   On printing  System out println  Current Date       d    of d it should print May 11 2010  - 00 00 00

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Use DateFormat to solve this problem   DateFormat dateFormat   new SimpleDateFormat  yyyy-MM-dd    DateFormat dateFormat2   new SimpleDateFormat  MM-dd-yyyy    print dateFormat format new Date        will print like 2014-02-20 print dateFormat2 format new Date        will print like 02-20-2014

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A java util Date object is a kind of timestamp - it contains a number of milliseconds since January 1  1970  00 00 00 UTC  So you can t use a standard Date object to contain just a day   month   year  without a time   As far as I know  there s no really easy way to compare dates by only taking the date  and not the time  into account in the standard Java API  You can use class Calendar and clear the hour  minutes  seconds and milliseconds   Calendar cal   Calendar getInstance    cal clear Calendar HOUR OF DAY   cal clear Calendar AM PM   cal clear Calendar MINUTE   cal clear Calendar SECOND   cal clear Calendar MILLISECOND     Do the same with another Calendar object that contains the date that you want to compare it to  and use the after   or before   methods to do the comparison   As explained into the Javadoc of java util Calendar clear int field       The HOUR OF DAY  HOUR and AM PM fields are handled independently and the the resolution rule for the time of day is applied  Clearing one of the fields doesn t reset the hour of day value of this Calendar  Use set Calendar HOUR OF DAY  0  to reset the hour value    edit - The answer above is from 2010  in Java 8  there is a new date and time API in the package java time which is much more powerful and useful than the old java util Date and java util Calendar classes  Use the new date and time classes instead of the old ones

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The accepted answer by Jesper is correct but now outdated  The java util Date and  Calendar classes are notoriously troublesome  Avoid them    java time  Instead use the java time framework  built into Java 8 and later  back-ported to Java 6  amp  7 and further adapted to Android     If you truly do not care about time-of-day and time zones  use LocalDate in the java time framework       LocalDate localDate   LocalDate of  2014   5   6      Today  A time zone is crucial in determining a date  For any given moment  the date varies around the globe by zone  For example  a few minutes after midnight in Paris France is a new day while still    yesterday    in Montr  al Qu  bec   If no time zone is specified  the JVM implicitly applies its current default time zone  That default may change at any moment during runtime     so your results may vary  Better to specify your desired expected time zone explicitly as an argument  If you want to use the JVM   s current default time zone  make your intention clear by calling ZoneId systemDefault    If critical  confirm the zone with your user   Specify a proper time zone name in the format of Continent Region  such as America Montreal  Africa Casablanca  or Pacific Auckland  Never use the 2-4 letter abbreviation such as EST or IST as they are not true time zones  not standardized  and not even unique       ZoneId z   ZoneId of   America Montreal        LocalDate today   LocalDate now  z       If you want to use the JVM   s current default time zone  ask for it and pass as an argument  If omitted  the code becomes ambiguous to read in that we do not know for certain if you intended to use the default or if you  like so many programmers  were unaware of the issue   ZoneId z   ZoneId systemDefault         Get JVM   s current default time zone  LocalDate today   LocalDate now  z       Moment  If you care about specific moments  specific points on the timeline  do not use LocalDate  If you care about the date as seen through the wall-clock time used by the people of a certain region  do not use LocalDate    Be aware that if you have any chance of needing to deal with other time zones or UTC  this is the wrong way to go  Na  ve programmers tend to think they do not need time zones when in fact they do   Strings  Call toString to generate a string in standard ISO 8601 format   String output   localDate toString         2014-05-06   For other formats  search Stack Overflow for DateTimeFormatter class   Joda-Time  Though now supplanted by java time  you can use the similar LocalDate class in the Joda-Time library  the inspiration for java time    LocalDate localDate   new LocalDate  2014  5  6

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I did as follows and it worked   Current date without timestamp   SimpleDateFormat dateFormat   new SimpleDateFormat  MM dd yyyy    Date today   dateFormat parse dateFormat format new Date

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I was looking for the same solution and the following worked for me       Calendar calendar   Calendar getInstance        calendar set Calendar HOUR OF DAY  0       calendar clear Calendar HOUR       calendar clear Calendar MINUTE       calendar clear Calendar SECOND       calendar clear Calendar MILLISECOND        Date today   calendar getTime      Please note that I am using calendar set Calendar HOUR OF DAY  0  for HOUR OF DAY instead of using the clear method  because it is suggested in Calendar clear method s javadocs as the following     The HOUR OF DAY  HOUR and AM PM fields are handled independently and   the the resolution rule for the time of day is applied  Clearing one   of the fields doesn t reset the hour of day value of this Calendar    Use set Calendar HOUR OF DAY  0  to reset the hour value    With the above posted solution I get output as  Wed Sep 11 00 00 00 EDT 2013   Using clear method for HOUR OF DAY resets hour at 12 when executing after 12PM or 00 when executing before 12PM

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You could use     Format a string containing a date  import java util Calendar  import java util GregorianCalendar  import static java util Calendar     Calendar c   GregorianCalendar getInstance    String s   String format  Duke s Birthday   1 tm  1 te  1 tY   c      - gt  s     Duke s Birthday  May 23  1995    Have a look at the Formatter API documentation

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I did as follows and it worked   calendar1 set Calendar HOUR OF DAY  0   calendar1 set Calendar AM PM  0   calendar1 set Calendar HOUR  0   calendar1 set Calendar MINUTE  0   calendar1 set Calendar SECOND  0   calendar1 set Calendar MILLISECOND  0   Date date1   calendar1 getTime             Convert it to date   Do this for other instances to which you want to compare  This logic worked for me  I had to compare the dates whether they are equal or not  but you can do different comparisons  before  after  equals  etc

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Here s an inelegant way of doing it quick without additional dependencies  You could just use java sql Date  which extends java util Date although for comparisons you will have to compare the Strings     java sql Date dt1   new java sql Date System currentTimeMillis     String dt1Text   dt1 toString    System out println  Current Date1       dt1Text    Thread sleep 2000    java sql Date dt2   new java sql Date System currentTimeMillis     String dt2Text   dt2 toString    System out println  Current Date2       dt2Text    boolean dateResult   dt1 equals dt2   System out println  Date comparison is     dateResult   boolean stringResult   dt1Text equals dt2Text   System out println  String comparison is     stringResult     Output      Current Date1   2010-05-10   Current Date2   2010-05-10   Date comparison is false   String comparison is true

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If you really want to use a Date instead for a Calendar for comparison  this is the shortest piece of code you could use   Calendar c   Calendar getInstance    Date d   new GregorianCalendar c get Calendar YEAR                                   c get Calendar MONTH                                   c get Calendar DAY OF MONTH   getTime      This way you make sure the hours minute second millisecond values are blank

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Here is full Example of it But you have to cast Sting back to Date   import java text ParseException  import java text SimpleDateFormat  import java util Date     TODO OutPut should LIKE in this format MM dd yyyy HH mm ss SSSSSS public class TestDateExample        public static void main String args    throws ParseException           SimpleDateFormat changeFormat   new SimpleDateFormat  MM dd yyyy HH mm ss SSSSSS             Date thisDate   new Date     changeFormat parse  10 07 2012              System out println  Current Date       thisDate            changeFormat format thisDate            System out println  ----------------------------             System out println  After applying formating              String strDateOutput   changeFormat format thisDate           System out println strDateOutput

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You can get by this date   DateFormat dateFormat   new SimpleDateFormat  yyyy-MM-dd    print dateFormat format new Date

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Also you can use apache commons lib DateUtils truncate     Date now   new Date    Date truncated   DateUtils truncate now  Calendar DAY OF MONTH     Time will be set to 00 00 00 so you can work with this date or print it formatted   DateFormat dateFormat   new SimpleDateFormat  yyyy-MM-dd HH mm ss     System out println dateFormat format now             2010-05-11 11 32 47 System out println dateFormat format truncated       2010-05-11 00 00 00

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Here is my code for get only date   Calendar c Calendar getInstance    DateFormat dm   new SimpleDateFormat  dd MM yyyy    java util Date date   new java util Date    System out println  current date is          dm format date

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I think this will work   Use Calendar to manipulate time fields  reset them to zero   then get the Date from the Calendar   Calendar c   GregorianCalendar getInstance    c clear  Calendar HOUR OF DAY    c clear  Calendar MINUTE    c clear  Calendar SECOND    c clear  Calendar MILLISECOND    Date today   c getTime      Or do the opposite   Put the date you want to compare to in a calendar and compare calendar dates  Date compareToDate      assume this is set before going in  Calendar today   GregorianCalendar getInstance    Calendar compareTo   GregorianCalendar getInstance    compareTo setTime  compareToDate    if  today get  Calendar YEAR      compareTo get  Calendar YEAR    amp  amp      today get  Calendar DAY OF YEAR       compareTo get  Calendar DAY OF YEAR             They are the same day

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You could always use apache commons  DateUtils class  It has the static method isSameDay   which  Checks if two date objects are on the same day ignoring time    static boolean isSameDay Date date1  Date date2

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private static final DateFormat df1   new SimpleDateFormat  yyyyMMdd         private static Date NOW   new Date        static           try               NOW   df1 parse df1 format new Date                catch  ParseException e                e printStackTrace

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DateFormat dateFormat   new SimpleDateFormat  MMMM dd yyyy      java util Date date   new java util Date      System out println  Current Date       dateFormat format date

[java] Java program to get the current date without timestamp

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