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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
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
Updated on: 13-Jan-2020
1K+ Views
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