Regex date validation for yyyy-mm-dd

Question

what is the regex for the date format yyyy-mm-dd   I want to validate the email from edittext and check if it matches the regex

User · Answer

This will match yyyy-mm-dd and also yyyy-m-d     d 4  - 0  1-9  1 012   - 0  1-9   12  0-9  3 01        If you re looking for an exact match for yyyy-mm-dd then try this    d 4  - 0 1-9  1 012   - 0 1-9   12  0-9  3 01      or use this one if you need to find a date inside a string like The date is 2017-11-30    d 4  - 0  1-9  1 012   - 0  1-9   12  0-9  3 01      https   regex101 com r acvpss 1

User · Answer

you can test this expression     d 4   -   s      0 13578    1 02     -   s     0-2  0-9    3 01        0 469    11    -   s     0-2  0-9    30     02  -   s   0-2  0-9       Description  validates a yyyy-mm-dd  yyyy mm dd  or yyyy mm dd date   makes sure day is within valid range for the month - does NOT validate Feb  29 on a leap year  only that Feb  Can have 29 days  Matches  tested    0001-12-31   9999 09 30   2002 03 03

User · Answer

You can use this regex to get the yyyy-MM-dd format      19 20   d  d - 0  1-9  1 012  -  12  0-9  3 01  0  1-9    You can find example for date validation  How to validate date with regular expression

User · Answer

A simple one would be   d 4 - d 2 - d 2      Debuggex Demo  but this does not restrict month to 1-12 and days from 1 to 31   There are more complex checks like in the other answers  by the way pretty clever ones  Nevertheless you have to check for a valid date  because there are no checks for if a month has 28  30  or 31 days

[java] Regex date validation for yyyy-mm-dd

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