DateTimeParseException: Text could not be parsed at index 2

Question

I am really confused now why the following snippet results in DateTimeParseException.

public static void main(String[] args) {
        java.time.format.DateTimeFormatter dtf = java.time.format.DateTimeFormatter.ofPattern("EEE, dd MMM yyyy HH:mm:ss zzz");
        String date = "Mon, 10 Sep 2018 23:57:09 UTC";
        System.out.println(dtf.parse(date));
}

The following exception is thrown:

Exception in thread "main" java.time.format.DateTimeParseException: Text 'Mon, 10 Sep 2018 23:57:09 UTC' could not be parsed at index 2
    at java.time.format.DateTimeFormatter.parseResolved0(DateTimeFormatter.java:1949)
    at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1777)
    at com.sample.binding.bitronvideo.driver.BitronVideoRecordingDriver.main(BitronVideoRecordingDriver.java:448)

I would really appreciate further help.

Thanks, Amit

Based on my limited experimentation, the parser seems unwilling to attempt to parse the day (and probably the month) name values without more context, ie, which language it should use. I changed the formatter to `DateTimeFormatter.ofPattern("EEE, dd MMM yyyy HH:mm:ss zzz", Locale.UK)` and was able to get your code to work — MadProgrammer, Sep 11 '18 at 00:09
If you could get a string with an offset of either `GMT` or `+0000` rather then `UTC`, it would conform with [`DateTimeFormatter.RFC_1123_DATE_TIME`](https://docs.oracle.com/javase/10/docs/api/java/time/format/DateTimeFormatter.html#RFC_1123_DATE_TIME). I realize it’s probably not an option for you, but wanted to mention it in case. — Ole V.V., Sep 11 '18 at 09:17

score 7 · Accepted Answer · edited Sep 11 '18 at 05:21

I didn't get the exception. So Checking your profile I saw that your locale is in Germany so i tried this and got the exception.

    java.time.format.DateTimeFormatter dtf = 
             java.time.format.DateTimeFormatter.ofPattern("EEE, dd MMM yyyy HH:mm:ss zzz", 
                                                       Locale.GERMANY);
    String date = "Mon, 10 Sep 2018 23:57:09 UTC";
    System.out.println(dtf.parse(date));

And the shordays for German are :

Short weekdays So, Mo, Di, Mi, Do, Fr, Sa

Try with this code and I bet it will work

    java.time.format.DateTimeFormatter dtf =
              java.time.format.DateTimeFormatter.ofPattern("EE, dd MMM yyyy HH:mm:ss zzz");
    String date = "Mo, 10 Sep 2018 23:57:09 UTC";
    System.out.println(dtf.parse(date));

But for your String Date to work just use UK or US Locale by passing an argument

    java.time.format.DateTimeFormatter dtf =
           java.time.format.DateTimeFormatter.ofPattern("EEE, dd MMM yyyy HH:mm:ss zzz", 
                                                         Locale.UK);
    String date = "Mon, 10 Sep 2018 23:57:09 UTC";
    System.out.println(dtf.parse(date));

1

Nice analysis and answer. – Ole V.V. Sep 11 '18 at 09:12

DateTimeParseException: Text could not be parsed at index 2

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