Question

I would like to extract an email address which is obfuscated with hyphens in that form: f-o-o-@-e-x-a-m-p-l-e-.-c-o-m

What I did so far is:

String email = "f-o-o-@-e-x-a-m-p-l-e-.-c-o-m";

Pattern p = Pattern.compile("((\\w-)+)@-((\\w-)+)\\.-((\\w-){1,}\\w{1,6})");
Matcher m = p.matcher(email);

while (m.find()) {
    email = email.replace("-", "");
}

System.out.println(email);

But I wonder, what if the email already have a hyphen “-” for example: [e-mail] or [e-mail] if theos mails obfuscated the same way above, my code won’t work. How could I solve this?

Answer 1

Sounds like what you want is this:

String email = "f-o-o-@-e-x-a-m-p-l-e-.-c-o-m";
email = email.replaceAll("(.)-", "$1");
System.out.println(email);

The . pattern matches any character while \w matches only digits and letters.