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Thread: Help with regex

  1. #1
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    Default Help with regex

    I have a program in which i'm creating TelephoneNumber objects which have ints areaCode exchangeCode and number. I'm using a regex to make sure that the input is an actual phone number. I want to know if there is a way to use a back reference to assign the first three numbers to areaCode, the second 3 to exchange code and the last 4 to number. My code is below

    Java Code:
    private static int areaCode, exchangeCode, number;
     public TelephoneNumber(String phoneNumber){
        Pattern pattern = Pattern.compile("(\\d{3})-(\\d{3})-(\\d{4})");
        Matcher matcher = pattern.matcher(phoneNumber);
            System.out.println("valid phone number");
            System.out.println("invalid phone number");
    Back reference 1 needs to equal to areaCode, 2 equal to exchangeCode and 3 to number but I don't know how to do this.

  2. #2
    Fubarable's Avatar
    Fubarable is offline Moderator
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    Please don't post the same question multiple times. Thank you for your cooperation.

  3. #3
    collin389 is offline Senior Member
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