Format String yyyy-mm-dd hh:mm:ss +timezone into DateTime

Question

I need to format a String that looks like this:

"2018-07-20 18:53:46.598000 +02:00:00" 

into a DateTime object like this:

20/07/2018 (HH with Timezone applied):53:46

My approach has been:

String dateTimePattern = "dd/MM/yyyy HH:mm:ss";
SimpleDateFormat dateTimeFormat = new SimpleDateFormat(dateTimePattern);                                                                                                                                                         
Date feUltModDateTime = dateTimeFormat.parse(feUltMod);
feUltMod = feUltModDateTime.toString();

But I'm getting a parse error:

java.text.ParseException: Unparseable date: "2018-07-20 18:53:46.598000 +02:00:00"

Answer 1

java.time

    DateTimeFormatter origFormatter 
            = DateTimeFormatter.ofPattern("uuuu-MM-dd HH:mm:ss.SSSSSS XXXXX");
    DateTimeFormatter desiredFormatter = DateTimeFormatter.ofPattern("dd/MM/uuuu HH:mm:ss");
    ZoneId desiredZone = ZoneId.of("America/Fort_Nelson");

    String feUltMod = "2018-07-20 18:53:46.598000 +02:00:00";
    OffsetDateTime dateTime = OffsetDateTime.parse(feUltMod, origFormatter);
    ZonedDateTime dateTimeWithTimeZoneApplied = dateTime.atZoneSameInstant(desiredZone);
    feUltMod = dateTimeWithTimeZoneApplied.format(desiredFormatter);
    System.out.println(feUltMod);

Output from this snippet is:

20/07/2018 09:53:46

Generally you need two formatters for converting a date or date-time from one format to another: one that specifies the format to convert from and one that specifies the format to convert to .

into a DateTime object like this

A date-time object doesn't have a format, so in that respect cannot be “like this”. dateTimeWithTimeZoneApplied in the above snippet is in the specified time zone, so has the hours adjusted. After converting to this time zone I have formatted into a string in the format you mentioned, in case you wanted this (I didn't find it clear).

I am using and recommending java.time, the modern Java date and time API. The date and time classes you were using, Date and SimpleDateFormat , are long outdated and poorly designed, it's not worth struggling with them. Also SimpleDateFormat supports only milliseconds so can only work correctly with exactly 3 decimals on the seconds, not with the 6 decimals you have got.

Link: Oracle tutorial: Date Time explaining how to use java.time .

Answer 2

    final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm");
    Date df = new Date();
    String yourString = sdf.format(df);

    Date parsedDate = sdf.parse(yourString);
    Timestamp sqlDate = new java.sql.Timestamp(parsedDate.getTime());

The above code will give you current Timestamp.Timestamp will provide better feasibilty