Validate only a specific email with regex in java

Question

I am trying to validate an email address. I currently have:

private static final String EMAIL_PATTERN = 
    "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"
    + "[A-Za-z0-9-]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";

This will validate any email but I am trying to validate only a company specific email e.g.

[email protected]

The email will always end with .com but i would like the ability to change the company name at a later date with a different specific string e.g. @anotheremail.com, @somethingelse.com

Can anyone help with with the syntax?

Thanks

Not really duplicate if that regex validates the email addresses you want to accept, but please note that RFC-compliant email validation can be tricky, as answered in this question: Using a regular expression to validate an email address — Xavi López
– Xavi López, Commented Feb 11, 2013 at 17:24
The main problem with the validation with a dynamic regular expression is that it always will be compiled over and over again. It is best to have a cache of already compiled patterns. — Paul Vargas
– Paul Vargas, Commented Feb 11, 2013 at 17:47

M. Witney · Accepted Answer · 2017-07-02 16:32:50Z

2

You can validate company specific email using this regex:

private static final String coDomain = "specificemail.com";
private static final String EMAIL_PATTERN = 
    "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"
    + Pattern.quote(coDomain) + "$";

Later on just change the value of coDomain variable to some other name as needed.

edited Jul 2, 2017 at 16:32

M. Witney

453 silver badges12 bronze badges

answered Feb 11, 2013 at 17:17

anubhava

790k67 gold badges603 silver badges671 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

jlordo · Accepted Answer · 2013-02-11 17:17:12Z

0

// be careful with regex meta characters in the company name.
public static String emailFromCompanyPatternString(String company) {
    return "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@"
    + company + (\\.[A-Za-z]{2,})$";
}

answered Feb 11, 2013 at 17:17

jlordo

37.9k7 gold badges63 silver badges84 bronze badges

Comments

Lucas · Accepted Answer · 2013-02-11 17:18:29Z

0

Perhaps something like this:

public static Pattern getEmailValidator( String domain ) {
    return Pattern.compile( "^[_A-Za-z0-9-\\+]+(\\.[_A-Za-z0-9-]+)*@" + domain );
}

public void someMethodThatNeedsToValidatEmail( String domain, String email ) {
    return getEmailValidator( domain ).matches( email );
}

Note, this is untested code...

answered Feb 11, 2013 at 17:18

Lucas

15.1k10 gold badges79 silver badges130 bronze badges

Comments

Abhimanyu Sharma · Accepted Answer · 2018-01-19 18:05:52Z

0

I am using this is for specific ending domain. Simply replace your ending domain with "@gmail.com"

private static final String EMAIL_REGEX1 = 
"^[a-zA-Z0-9_+&*-]+(?:\\.[a-zA-Z0-9_+&*-]+)*@gmail.com";

private static final String EMAIL_REGEX1 = 
"^[a-zA-Z0-9_+&*-]+(?:\\.[a-zA-Z0-9_+&*-]+)*@somethingelse.com";

Visit https://ideone.com/UUTnky for Full Regex Email Validation Java Implementation.

answered Jan 19, 2018 at 18:05

Abhimanyu Sharma

4434 silver badges3 bronze badges

Collectives™ on Stack Overflow

Validate only a specific email with regex in java

4 Answers 4

Comments

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related