How do I validate the format of a MAC address?

Question

What\'s the best way to validate that an MAC address entered by the user?

The format is HH:HH:HH:HH:HH:HH, where each H is a hexadecimal ch

Answer 1

private static final String MAC_PATTERN = "^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$";

private boolean validateMAC(final String mac){          
          Pattern pattern = Pattern.compile(MAC_PATTERN);
          Matcher matcher = pattern.matcher(mac);
          return matcher.matches();             
    }