Twitter API Question posted in
The official Twitter API documentation can be found here.

How can I parse Twitter API dates into java.time.Instant?

I am trying to parse the dates that come from the Twitter API into the new Instant class from Java 8. FYI, this is the format Wed Aug 09 17:11:53 +0000 2017.

I don’t want to deal with / set a time zone, as one is specified in the string already. I just want an Instant instance.

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  1. Chosen as BEST ANSWER
    0

    Found the solution

    Instant.from(DateTimeFormatter.ISO_OFFSET_DATE_TIME.parse(dateStr))

  2. 0

    Follow the documentation of DateTimeFormatter:

        DateTimeFormatter dtf 
            = DateTimeFormatter.ofPattern("EEE MMM dd HH:mm:ss X uuuu", Locale.ROOT);
    Instant asInstant = OffsetDateTime.parse(dateStr, dtf).toInstant();

    With your example string the result is an Instant of

    2017-08-09T17:11:53Z

    It seems from the Twitter documentation that offset will always be +0000. Depending on how strongly you trust this to be the case, you may use small x or capital Z instead of capital X in the format pattern. If you want stricter validation, you may also check that the OffsetDateTime’s .getOffset().equals(ZoneOffset.UTC) yields true before you convert to Instant.

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