Different MAC Addresses Regex

Question

What is the correct regular expression for matching MAC addresses ? I googled about that but, most of questions and answers are incomplete. They only provide a regular expre

Answer 1

Why so much code? Here is how you can "normalize" your mac address:

mac.replaceAll("[^a-fA-F0-9]", "");

And here is a way to validate it:

public boolean validate(String mac) {
   Pattern p = Pattern.compile("^([a-fA-F0-9][:-]){5}[a-fA-F0-9][:-]$");
   Matcher m = p.matcher(mac);
   return m.find();
}