CODEWITHSUNDEEP
javaregexphone-number
zoom_pat277
zoom_pat277

Reputation: 1224

Remove dash from a phone number

What regular expression using java could be used to filter out dashes '-' and open close round brackets from a string representing phone numbers...

so that (234) 887-9999 should give 2348879999 and similarly 234-887-9999 should give 2348879999.

Thanks,

Upvotes: 33

Views: 68631

Answers (3)

Dharamveer Mithilesh Gupta
Dharamveer Mithilesh Gupta

Reputation: 93

Kotlin version of working solution for me - (Extension Function)

fun getMeMyNumber(number: String, countryCode: String): String? {
    return number.replace("[^0-9\\+]".toRegex(), "") //remove all the non numbers (brackets dashes spaces etc.) except the + signs
        .replace("(^[1-9].+)".toRegex(), "$countryCode$1") //if the number is starting with no zero and +, its a local number. prepend cc
        .replace("(.)(\\++)(.)".toRegex(), "$1$3") //if there are left out +'s in the middle by mistake, remove them
        .replace("(^0{2}|^\\+)(.+)".toRegex(), "$2") //make 00XXX... numbers and +XXXXX.. numbers into XXXX...
        .replace("^0([1-9])".toRegex(), "$countryCode$1") //make 0XXXXXXX numbers into CCXXXXXXXX numbers
}

Upvotes: 0

Tharaka Devinda
Tharaka Devinda

Reputation: 2022

    public static String getMeMyNumber(String number, String countryCode)
    {    
         String out = number.replaceAll("[^0-9\\+]", "")        //remove all the non numbers (brackets dashes spaces etc.) except the + signs
                        .replaceAll("(^[1-9].+)", countryCode+"$1")         //if the number is starting with no zero and +, its a local number. prepend cc
                        .replaceAll("(.)(\\++)(.)", "$1$3")         //if there are left out +'s in the middle by mistake, remove them
                        .replaceAll("(^0{2}|^\\+)(.+)", "$2")       //make 00XXX... numbers and +XXXXX.. numbers into XXXX...
                        .replaceAll("^0([1-9])", countryCode+"$1");         //make 0XXXXXXX numbers into CCXXXXXXXX numbers
         return out;

    }

Upvotes: 9

Vivin Paliath
Vivin Paliath

Reputation: 95578

phoneNumber.replaceAll("[\\s\\-()]", "");

The regular expression defines a character class consisting of any whitespace character (\s, which is escaped as \\s because we're passing in a String), a dash (escaped because a dash means something special in the context of character classes), and parentheses.

See String.replaceAll(String, String).

EDIT

Per gunslinger47:

phoneNumber.replaceAll("\\D", "");

Replaces any non-digit with an empty string.

Upvotes: 80

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