Regular express validate date time

reference:
http://stackoverflow.com/questions/1315376/regular-expression-for-date-time-format-mm-dd-yy-hhmmss-am-pm-in-asp-net-reg


RegEx for matching all dates, including leap years.

1. For DD-MM-YYYY format

^(?:31#(?:(?:0[13578])|(?:1[02]))#)|(?:(?:29|30)#(?:(?:0[1,3-9])|(?:1[0-2]))#)(?:(?:1[6-9]|[2-9]\d)\d{2})$|^(?:29#02#(?:(?:(?:1[6-9]|[2-9]\d)(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:(?:0[1-9])|(?:1\d)|(?:2[0-8]))#(?:(?:0[1-9])|(?:1[0-2]))#(?:(?:1[6-9]|[2-9]\d)\d{2})$

2. For MM-DD-YYYY format

^(?:(?:(?:0?[13578]|1[02])#31)\1|(?:(?:0?[1,3-9]|1[0-2])#(?:29|30)\2))(?:(?:1[6-9]|[2-9]\d)?\d{2})$|^(?:0?2#29\3(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:(?:0?[1-9])|(?:1[0-2]))#(?:0?[1-9]|1\d|2[0-8])\4(?:(?:1[6-9]|[2-9]\d)?\d{2})$

3. Java Code

String inputDate;
String regex="^(?:31/(?:(?:0[13578])|(?:1[02]))/)|(?:(?:29|30)/(?:(?:0[1,3-9])|(?:1[0-2]))/)(?:(?:1[6-9]|[2-9]\\d)\\d{2})$|^(?:29/02/(?:(?:(?:1[6-9]|[2-9]\\d)(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:(?:0[1-9])|(?:1\\d)|(?:2[0-8]))/(?:(?:0[1-9])|(?:1[0-2]))/(?:(?:1[6-9]|[2-9]\\d)\\d{2})$";
Pattern pattern = Pattern.compile(inputDate);
Matcher matcher = pattern.matcher(inputDate);
boolean found = matcher.matches();

4. For Time

^([0|1][0-9]|2[0-3]):[0-5][0-9]:[0-5][0-9]$