I've got a regex problem: I'm trying to force a phone number beginning with either "00" or "+" but my attempt doesn't work.
String PHONE_PATTERN = "^[(00)|(+)]{1}[0-9\\s.\\/-]{6,20}$";
Inside character class every character is matched literally, which means [(00)|(+)]
will match a 0 or + or | or ( or )
Use this regex:
String PHONE_PATTERN = "^(?:00|\\+)[0-9\\s.\\/-]{6,20}$";