regular expression email validation with wild card

hi,
i am looking for a regular expression suitable for validating userinput from a JSP. the feild i am looking for is Email ID. this Textbox should accept wild card charecter(%).
has any one worked on this or any references to look.
regards,

Hello "nagsi nagsi"-

Welcome to JavaRanch. YOu may have overlooked that there is a naming policy governing screen names; you should correct yours accordingly.

If you just start out with RegExps, this web site may help you get going. If you just want an expression checking email addresses, a simple Google search will get you many examples.

hi,
Thanks for your suggestion. I will change my display name. I googled for the expression. i could get lot of expressions but none of them suit my requirement. this is for developing a search screen where a user can search by entering email id *with* wild chareter(%).

I got this from www.regexlib.com , but it has a restriction on the position of wild card.

\w+[\w-\.]*\@\w+((-\w+)|(\w*))\.[a-z]{2,3}$|^([0-9a-zA-Z'\.]{3,40})\*|([0-9a-zA-Z'\.]+)@([0-9a-zA-Z']+)\.([0-9a-zA-Z']+)$|([0-9a-zA-Z'\.]+)@([0-9a-zA-Z']+)\*+$|^$

any ideas to modify hte above.