Validate Phone Number
This program validates phone number using regex.
Problem Statement
Write a Java program to validate a phone number in format XXX-XXX-XXXX.
Source Code
| 1 | public class RegexPhoneValidation { |
| 2 | public static void main(String[] args) { |
| 3 | System.out.println("Eduinq Regex Phone Validation"); |
| 4 | String phone="123-456-7890"; |
| 5 | String regex="^\\d{3}-\\d{3}-\\d{4}$"; |
| 6 | if(phone.matches(regex)) System.out.println("Valid phone number"); |
| 7 | else System.out.println("Invalid phone number"); |
| 8 | } |
| 9 | } |
Program Output
Eduinq Regex Phone Validation Valid phone number
Explanation
The regex ^\d{3}-\d{3}-\d{4}$ requires exactly three digits, a hyphen, three digits, a hyphen, and four digits, and matches() validates the phone string against this fixed format.