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Regex Date and Time Validation

Hello,
Please help me with Regex for the following date formats in java:

1. MM/dd/yyyy

2. yyyy/MM/dd

it should validate the date considering all the things: like months of 30 and 31 days and 28 days and 29 days, month fld should not be > 12 and so on.
Time Formats:

1. hh:mm 12 hour format.

Thanks

ksivananth

it would be difficult using regex, better you capture the date string using regex and validate using SimpleDateFormat, check the example, http://www.dreamincode.net/forums/showtopic14886.htm

ASKER CERTIFIED SOLUTION

Gurvinder Pal Singh

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panshul007

ASKER

Please give me Regex for time format atleast...

ksivananth

MM\dd\yyyy - "\\d{2}\\\\\\d{2}\\\\\\d{4}"

Gurvinder Pal Singh

For time format
^(([0]?[0-5][0-9]|[0-9]):([0-5][0-9]))$

If you explore the link that i had given earlier, many examples are given, which may interest you

Thanks

SOLUTION

Mick Barry

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pavanshahi

Use SimpleDateFormat

http://java.sun.com/j2se/1.4.2/docs/api/java/text/SimpleDateFormat.html

panshul007

ASKER

for time this regex worked: (1[012]|0[1-9]|[1-9]):[0-5][0-9]

for date I used the date formater util and put it in a try catch.... if it was unsuccessful in converting i.e not a valid date format... so generated error in catch....

actually i am validating my web service.

panshul007

ASKER

the expert comment by object was the most helpful...
it gave me the actual idea for validating the date...

actually i am validating my web service...

and gurwinder thanks for the date formatter idea..

Although i had to modify everything to get the actual date validation that included the 30 and 31 days check and leap year check...

and time validation i had to make myself.