Message Encrypter - Regex, quantifiers, alternative namedgrp

package com.company;

import javafx.util.Pair;

import javax.xml.crypto.dsig.keyinfo.KeyValue;
import java.lang.reflect.Array;
import java.security.KeyStore;
import java.text.Collator;
import java.text.DecimalFormat;
import java.util.*;
import java.util.function.Predicate;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collector;
import java.util.stream.Collectors;


public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int n = Integer.parseInt(scanner.nextLine());
        final String REGEX = "(\\*|@)(?<tag>[A-Z][a-z]{2,})\\1: \\[(?<f>[A-Z]|[a-z])\\]\\|\\[(?<s>[A-Z]|[a-z])\\]\\|\\[(?<t>[A-Z]|[a-z])\\]\\|$";
        Pattern pattern = Pattern.compile(REGEX);

        for (int i = 0; i < n; i++) {
            String message = scanner.nextLine();
            Matcher matcher = pattern.matcher(message);
            if(matcher.find()){
                String tag = matcher.group("tag");
                String first = matcher.group("f");
                String second = matcher.group("s");
                String third = matcher.group("t");

                System.out.printf(tag+ ": " + "%d %d %d\n",
                        (int) first.charAt(0),
                        (int) second.charAt(0),
                        (int) third.charAt(0));
            }else{
                System.out.println("Valid message not found!");
            }
        }
    }

}