ThreeTenBP DateTimeParseException

Question

I am trying to convert a date String from the server to dateTime with ThreeTenBP. My method looks like this:

String toDateTime(String dateString) {
    DateTimeFormatter formatter = new DateTimeFormatterBuilder().appendPattern("M/d/yyyy h:mm a").toFormatter();
    ZonedDateTime dateTimeWithZone = ZonedDateTime.parse(dateString, formatter);
    return dateTimeWithZone.toString();
}

However, I get an exception:

DateTimeParseException: Text '2015-07-21T09:26:06.260-05:00' could not be parsed at index 4

What am I doing wrong?

Well, look at your pattern and look at the input string...

fge
– fge

2015-07-21 15:05:00 +00:00
Commented Jul 21, 2015 at 15:05 — fge
– fge, Commented Jul 21, 2015 at 15:05

emu · Accepted Answer · 2015-07-21 15:35:33Z

1

Your pattern begins with "M/" which would indicate the month. Your actual date string begins with "2015-" which is obviously the year. Actually that date looks like it's in ISO 8601 format and a pattern like "yyyy-MM-dd'T'HH:mm:ss.SSSX" would match.

edited Jul 21, 2015 at 15:35

answered Jul 21, 2015 at 15:12

emu

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3 Comments

IgorGanapolsky Over a year ago

After trying your pattern, I get this error: Text '2015-07-21T09:26:06.260-05:00' could not be parsed at index 19

emu Over a year ago

Just updated the answer. See docs.oracle.com/javase/7/docs/api/java/text/… for date pattern docs.

emu Over a year ago

Ah, that nasty colon character in the timezone. Needs "X" instead of "Z" to parse that. I think that's only available with Java 7 and newer. Not sure they backported that with ThreeTenBP. Good luck!

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