Named captured groups Java regular expressions


Named capturing groups allows you to reference the groups by names. Java started supporting captured groups since SE7.

Example

 Live Demo

import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class ReplaceAll{
   public static void main(String[] args) {
      Scanner sc = new Scanner(System.in);
      System.out.println("Enter input text: ");
      String input = sc.nextLine();
      String regex = "(?<globalCode>[\\d]{2})-(?<nationalCode>[\\d]{5})-(?<number>[\\d]{6})";
      //Creating a pattern object
      Pattern pattern = Pattern.compile(regex);
      //Matching the compiled pattern in the String
      Matcher matcher = pattern.matcher(input);
      while (matcher.find()) {
         System.out.println("Global code: "+matcher.group("globalCode"));
         System.out.println("National code: "+matcher.group("nationalCode"));
         System.out.println("Phone number: "+matcher.group("number"));
      }
   }
}

Output

Enter input text:
91-08955-224558
Global code: 91
National code: 08955
Phone number: 224558
raja
Published on 13-Jan-2020 06:35:43
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