i have a code written in jsp to enter and edit user accounts. But for fields like Name its taking numeric values also, and also how to check an enter only valid format of e-mail in the e-mail id field. Is there any function in jsp like isAlpha, isAlphanumeric to check the input type???

there isn't, and there shouldn't be, as such things are NOT things you do in a JSP.
Javascript maybe, servlets certainly, but not JSP.

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