HowToDoInJava

Java format string to phone number with dashes – (123) 456-6789 pattern

By Lokesh Gupta | Filed Under: Java String class

Learn to format string to phone number pattern which is (123) 456-6789. This conversion is generally required in applications where customer’s data has to be displayed and phone number is part of this data.

How to format string to phone number with dashes

To format string to phone number –

  1. Break the string to 3 groups using regular expression '(\\d{3})(\\d{3})(\\d+)'.
  2. First group contains 3 digits. Second contains 3 digits and last group contains all remaining digits.
  3. Create a formatted string using these groups in '($1) $2-$3' pattern.

Given below is a Java program which converts a string to phone number in (###) ###-#### format.

String input = "1234567890";

String number = input.replaceFirst("(\\d{3})(\\d{3})(\\d+)", "($1) $2-$3");

System.out.println(number);

Program output.

(123) 456-7890

Happy Learning !!

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About Lokesh Gupta

Founded HowToDoInJava.com in late 2012. I love computers, programming and solving problems everyday. A family guy with fun loving nature. You can find me on Facebook, Twitter and Google Plus.

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