Regex to get date from string

Question

I need a regular expression to get date out of the following String

anything-2011.01.17-16.50.19.xml

Is this a correct one

^\\         


        

Answer 1

The following regex is a bit stricter. It will match years in the range 1900 to 2099, months in 01 to 12 and days in 01 to 31.

^.*?-((19|20)\d\d\.(0[1-9]|1[1-2])\.(0[1-9]|[12][0-9]|3[01]))-.*?.xml$