Java Regex specify length

Question

Please find below the regex I am using for validating an email address. This is working fine.

^[-!#$%&\\'*+\\\\./<MORE_REGEX_HERE>^_`a-z{|}~]+$

Now I want to add a length check in this regex for example the email address can be of max length 60. So I tried something like below

^([-!#$%&\\'*+\\\\./<MORE_REGEX_HERE>^_`a-z{|}~]+){1,60}$

But its not working. Any thoughts?

In addition to your original regex, you could check for the length `^.{,60}$`. — devnull, Jan 07 '14 at 06:43
@RafaEl - You mean in UI right that is already there but I want to re verify in backend. — A Paul, Jan 07 '14 at 06:46
http://stackoverflow.com/questions/1649435/regular-expression-to-limit-number-of-characters-to-10 — Parkash Kumar, Jan 07 '14 at 06:50

score 2 · Accepted Answer · answered Jan 09 '14 at 13:06

2

Hey you can find the below solution if it works:-

It might be so that you are having multiple matching strings within a single -

^[-!#$%&\'*+\\.]+[^_`a-z{|}~]+$

in such cases you cannot use ^[-!#$%&\'*+\\.]+[^_`a-z{|}~]{1,60}$

to match the whole string but it matches only the second part of the string in such cases you need to use the below regex: -

[^[-!#$%&\\'*+\\\\.]+[<MORE_REGEX_HERE>^_`a-z{|}~]+$]{1,60}

Try it should work now.

answered Jan 09 '14 at 13:06

user3115056

score 0 · Answer 2 · edited May 23 '17 at 12:23

0

If you want a valid way of validating emails try this: Good solution

Using {n,m} matches n(minimum inclusive) to m (maximum inclusive) characters.

edited May 23 '17 at 12:23

Community

answered Jan 07 '14 at 07:33

AlfredoVR

score 0 · Answer 3 · answered Jan 09 '14 at 13:10

0

Use a lookahead assertion:

^(?=[-!#$%&\\'*+\\\\./<MORE_REGEX_HERE>^_`a-z{|}~]+).{1,60}$

answered Jan 09 '14 at 13:10

Toto

3 Answers3