How to get the current time in YYYY-MM-DD HH MI Sec Millisecond format in Java

Question

The code below gives me the current time  But it does not tell anything about milliseconds  public static String getCurrentTimeStamp         SimpleDateFormat sdfDate   new SimpleDateFormat  quot yyyy-MM-dd HH mm ss quot     dd MM yyyy     Date now   new Date        String strDate   sdfDate format now       return strDate     I have a date in the format YYYY-MM-DD HH MM SS  2009-09-22 16 47 08   But I want to retrieve the current time in the format YYYY-MM-DD HH MM SS MS  2009-09-22 16 47 08 128  where 128 are the milliseconds   SimpleTextFormat will work fine  Here the lowest unit of time is second  but how do I get millisecond as well

User · Answer

I would use something like this   String format   tF   lt tT   lt tL   dateTime     Variable dateTime could be any date and or time value  see JavaDoc for Formatter

User · Answer

A Java one liner  public String getCurrentTimeStamp         return new SimpleDateFormat  yyyy-MM-dd HH mm ss SSS   format new Date         in JDK8 style  public String getCurrentLocalDateTimeStamp         return LocalDateTime now           format DateTimeFormatter ofPattern  yyyy-MM-dd HH mm ss SSS

User · Answer

I don t see a reference to this   SimpleDateFormat f   new SimpleDateFormat  yyyyMMddHHmmssSSS      above format is also useful   http   www java2s com Tutorials Java Date Date Format Format date in yyyyMMddHHmmssSSS format in Java htm

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try this -  http   docs oracle com javase 6 docs api java text SimpleDateFormat html  DateFormat dateFormat   new SimpleDateFormat  yyyy MM dd HH mm ss SSS    Date date   new Date    System out println dateFormat format date      or  DateFormat dateFormat   new SimpleDateFormat  yyyy MM dd HH mm ss    Calendar cal   Calendar getInstance    System out println dateFormat format cal getTime

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I have a simple example here to display date and time with Millisecond        import java time LocalDateTime  import java time format DateTimeFormatter   public class MyClass       public static void main String  args           LocalDateTime myObj   LocalDateTime now            DateTimeFormatter myFormat   DateTimeFormatter ofPattern  yyyy-MM-dd HH mm ss SSS           String forDate   myObj format myFormat           System out println  The Date and Time are      forDate

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Ans   DateTimeFormatter dateFormatter   DateTimeFormatter ofPattern  yyyy-MM-dd HH mm ss SSS    ZonedDateTime start   Instant now   atZone ZoneId systemDefault     String startTimestamp   start format dateFormatter

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tl dr  Instant now           toString        2016-05-06T23 24 25 694Z   ZonedDateTime  now        ZoneId of   America Montreal        format   DateTimeFormatter ISO LOCAL DATE TIME    replace   T               2016-05-06 19 24 25 694   java time  In Java 8 and later  we have the java time framework built into Java 8 and later  These new classes supplant the troublesome old java util Date  Calendar classes  The new classes are inspired by the highly successful Joda-Time framework  intended as its successor  similar in concept but re-architected  Defined by JSR 310  Extended by the ThreeTen-Extra project  See the Tutorial   Be aware that java time is capable of nanosecond resolution  9 decimal places in fraction of second   versus the millisecond resolution  3 decimal places  of both java util Date  amp  Joda-Time  So when formatting to display only 3 decimal places  you could be hiding data   If you want to eliminate any microseconds or nanoseconds from your data  truncate   Instant instant2   instant truncatedTo  ChronoUnit MILLIS       The java time classes use ISO 8601 format by default when parsing generating strings  A Z at the end is short for Zulu  and means UTC    An Instant represents a moment on the timeline in UTC with resolution of up to nanoseconds  Capturing the current moment in Java 8 is limited to milliseconds  with a new implementation in Java 9 capturing up to nanoseconds depending on your computer   s hardware clock   s abilities   Instant instant   Instant now        Current date-time in UTC  String output   instant toString          2016-05-06T23 24 25 694Z   Replace the T in the middle with a space  and the Z with nothing  to get your desired output    String output   instant toString    replace    T          replace   Z            Replace  T   delete  Z   I recommend leaving the  Z  or any other such  offset-from-UTC  7  or  time zone  7  indicator to make the meaning clear  but your choice of course       2016-05-06 23 24 25 694   As you don t care about including the offset or time zone  make a  local  date-time unrelated to any particular locality   String output   LocalDateTime now     toString    replace    T            Joda-Time  The highly successful Joda-Time library was the inspiration for the java time framework  Advisable to migrate to java time when convenient   The ISO 8601 format includes milliseconds  and is the default for the Joda-Time 2 4 library   System out println   Now      new DateTime   DateTimeZone UTC        When run     Now  2013-11-26T20 25 12 014Z   Also  you can ask for the milliseconds fraction-of-a-second as a number  if needed   int millisOfSecond   myDateTime getMillisOfSecond

User · Answer

To complement the above answers  here is a small working example of a program that prints the current time and date  including milliseconds   import java text SimpleDateFormat  import java util Date   public class test       public static void main String argv             SimpleDateFormat sdf   new SimpleDateFormat  yyyy-MM-dd HH mm ss SSS            Date now   new Date            String strDate   sdf format now           System out println strDate

User · Answer

Use this to get your current time in specified format      DateFormat dateFormat   new SimpleDateFormat  yyyy-MM-dd HH mm ss     System out print dateFormat format System currentTimeMillis

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SimpleDateFormat sdf   new SimpleDateFormat  yyyy-MM-dd HH mm ss SSS

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The easiest way was to  prior to Java 8  use   SimpleDateFormat sdf   new SimpleDateFormat  yyyy-MM-dd HH mm ss SSS      But SimpleDateFormat is not thread-safe  Neither java util Date  This will lead to leading to potential concurrency issues for users  And there are many problems in those existing designs  To overcome these now in Java 8 we have a separate package called java time  This Java SE 8 Date and Time document has a good overview about it   So in Java 8 something like below will do the trick  to format the current date time    LocalDateTime now       format DateTimeFormatter ofPattern  yyyy-MM-dd HH mm ss SSS       And one thing to note is it was developed with the help of the popular third party library joda-time      The project has been led jointly by the author of Joda-Time  Stephen Colebourne  and Oracle  under JSR 310  and will appear in the new Java SE 8 package java time    But now the joda-time is becoming deprecated and asked the users to migrate to new java time      Note that from Java SE 8 onwards  users are asked to migrate to java time  JSR-310  - a core part of the JDK which replaces this project   Anyway having said that   If you have a Calendar instance you can use below to convert it to the new java time       Calendar calendar   Calendar getInstance        long longValue   calendar getTimeInMillis                  LocalDateTime date               LocalDateTime ofInstant Instant ofEpochMilli longValue   ZoneId systemDefault         String formattedString   date format DateTimeFormatter ofPattern  yyyy-MM-dd HH mm ss SSS          System out println date toString        2018-03-06T15 56 53 634     System out println formattedString      2018-03-06 15 56 53 634   If you had a Date object       Date date   new Date        long longValue2   date getTime         LocalDateTime dateTime               LocalDateTime ofInstant Instant ofEpochMilli longValue2   ZoneId systemDefault         String formattedString   dateTime format DateTimeFormatter ofPattern  yyyy-MM-dd HH mm ss SSS          System out println dateTime toString        2018-03-06T15 59 30 278     System out println formattedString          2018-03-06 15 59 30 278   If you just had the epoch milliseconds   LocalDateTime date           LocalDateTime ofInstant Instant ofEpochMilli epochLongValue   ZoneId systemDefault

User · Answer

You can simply get it in the format you want   String date   String valueOf android text format DateFormat format  dd-MM-yyyy   new java util Date

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java text  prior to java 8   public static ThreadLocal lt DateFormat gt  dateFormat   new ThreadLocal lt DateFormat gt          protected DateFormat initialValue             return new SimpleDateFormat  yyyy-MM-dd HH mm ss SSS                   dateFormat get   format new Date       java time  public static DateTimeFormatter dateTimeFormatter   DateTimeFormatter ofPattern  yyyy-MM-dd HH mm ss SSS         dateTimeFormatter format LocalDateTime now

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You only have to add the millisecond field in your date format string   new SimpleDateFormat  yyyy-MM-dd HH mm ss SSS      The API doc of SimpleDateFormat describes the format string in detail

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The doc in Java 8 names it fraction-of-second   while in Java 6 was named millisecond  This brought me to confusion

[java] How to get the current time in YYYY-MM-DD HH:MI:Sec.Millisecond format in Java?

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