How to properly validate email addresses in Java

If you are using Java, the InternetAddress class will validate your emails against the RFC 822 standard. The function below will filter out most invalid emails quickly:

public static boolean isValidEmailAddress(String email) {
    try {
        new InternetAddress(email).validate();
    } catch (AddressException ex) {
        return false;
    }
    return true;
}

This regex will also match email adresses. However, it’s not bulletproof. Emails such as n@n.n or ____@--... would still pass validation.

/^([a-z0-9_\.\+-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$/

Leave a Reply

Your email address will not be published. Required fields are marked *

To create code blocks or other preformatted text, indent by four spaces:

    This will be displayed in a monospaced font. The first four 
    spaces will be stripped off, but all other whitespace
    will be preserved.
    
    Markdown is turned off in code blocks:
     [This is not a link](http://example.com)

To create not a block, but an inline code span, use backticks:

Here is some inline `code`.

For more help see http://daringfireball.net/projects/markdown/syntax