PHP regular expression to JSP?

Question

Hi there,
I have the following PHP regular expression, and was looking for tips on how to create an equivalent in JSP using the 1.3.1 API. This has been causing me problems since the regex package didn't arrive until 1.4.
preg_match("/^(([\w\-\_])+(\.)*)+\@([\w\-\_]+\.)+[A-Za-z]{2,}$/i", $theAddress)Basically, it checks to make sure a valid email address pattern has been input.
Any help would be appreciated!
Thanks!

Answer 1

Though I donno about PHP and the related stuff that you've posted, I can help you by providing a JS function that you can invoke to check for the valid format of an e-mail ID, I guess if this is what you want.
function isEmail (s)
    // there must be >= 1 character before @, so we
    // start looking at character position 1
    // (i.e. second character)
    var i = 1;
    var sLength = s.length;
    // look for @
    while ((i < sLength) && (s.charAt(i) != "@"))
    { i++
    if ((i >= sLength) || (s.charAt(i) != "@")) return false;
    else i += 2;
    // look for .
    while ((i < sLength) && (s.charAt(i) != "."))
    { i++
    // there must be at least one character after the .
    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
    else return true;
}'s' is the e-mail ID string that you want to check.
Hope you're assisted.
fun_one