regular expression for datetimeformat (yyyy-mm-ddThh:mm:ss) ISO8601 format

Question

I want to validate that calendar object should be as 2014-05-05T12:12:30.How to validate a this using regular expression

take a look at this thread, it is JS but very simil arhttp://stackoverflow.com/a/12756279/2362664 — Khinsu, Jul 24 '14 at 15:35
Depending on what you really want to achieve you can use the built-in functionality of the Joda datetime library. Check out the function [ISODateTimeFormat.dateTimeParser()](http://joda-time.sourceforge.net/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTimeParser()). — MicSim, Jul 24 '14 at 15:45

score 3 · Answer 1 · edited Jun 10 '16 at 18:20

3

The regex in Adam Yost's answer is close, but missing a closing bracket before the T... don't have enough rep to comment so here is the corrected version:

(19|20)[0-9][0-9]-(0[0-9]|1[0-2])-(0[1-9]|([12][0-9]|3[01]))T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]

edited Jun 10 '16 at 18:20

Gus

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answered Jun 10 '16 at 16:58

sam

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score 0 · Answer 2 · answered Jul 24 '14 at 15:38

This regex will only match dates in that format with a few restrictions:

(19|20)[0-9][0-9]-(0[0-9]|1[0-2])-(0[1-9]|([12][0-9]|3[01])T([01][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]

This matches years 1900-2099, 12 months, up to 31 days, 24 hr clock, up to 59 minutes, up to 59 seconds

It should be noted that if you wish to validate whether or not something is a truly valid date (ie not Feb 30) you will need either a far more complex regex, or some simple code to wrap around it.

regular expression for datetimeformat (yyyy-mm-ddThh:mm:ss) ISO8601 format

2 Answers2