Java regex accepting only email with .ca domain

Question

i'm really really bad with regexes. can anyone help me build a java regex that accept only email finishing with .ca.

i've tried something like

^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*
      @[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.ca$;

Thanks

I'm really, really good at closing questions that show no attempt. — Mitch Wheat, May 05 '13 at 04:33
Think about what is common to all valid e-mail addresses and create (or copy) a regex that matches it. Then adapt it for Canadian domains — nullptr, May 05 '13 at 04:35
Giant clue-by-four: http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#endsWith(java.lang.String) — Brian Roach, May 05 '13 at 04:43
See http://stackoverflow.com/questions/201323/using-a-regular-expression-to-validate-an-email-address — Raedwald, Jan 14 '15 at 23:30

gillyspy · Accepted Answer · 2013-05-05T05:02:09.637

in the spirit of teaching you how to fish... these are all directly relevant to problems with your attempt and might help you improve.

one trend i see in your regex code is that you are escaping . to make it literal by using \\.. By double-escaping it you are saying that you want a literal slash followed by a single character wildcard. So that should be \. I see you doing this for other special characters too.
it may be easier for you to write these special characters in class format like this [.]. that means literal dot as well and doesn't use any escaping.
you don't need to escape special characters in a character class. I think you did this for \\+
you can write [A-Za-z] simpler as [A-z]
[0-9] could be written as [\d]
[_A-z0-9] coudl be written as [\w]
You're missing a closing )

To get you going immediately this should work:

([\w-\.]+)@((?:[\w]+\.)+)(ca)

score 0 · Answer 2 · answered May 05 '13 at 04:44

0

You can try this out:

([\w-\.]+)@((?:[\w]+\.)+)(ca)

answered May 05 '13 at 04:44

Santosh Panda

2 Answers2