02.Message Decrypter (Java Fund. Final Exam-3.08.19 Group 1)

package PastFinalExams.FinalExam03August2019Group1;

import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

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

        int inputCounts = Integer.parseInt(scanner.nextLine());

        String regex = "^(?<tagBorder>[$%])(?<tag>[A-Za-z]{3,})(\\1): (?<first>\\[\\d+])\\|(?<second>\\[\\d+])\\|(?<third>\\[\\d+])\\|$";
        Pattern pattern = Pattern.compile(regex);

        for (int i = 0; i < inputCounts; i++) {
            String message = scanner.nextLine();

            Matcher matcher = pattern.matcher(message);

            if (matcher.find()) {
                String tag = matcher.group("tag");
                String first = matcher.group("first");
                String second = matcher.group("second");
                String third = matcher.group("third");

                System.out.printf("%s: ", tag);
                numberExtractorAndPrintResult(first);
                numberExtractorAndPrintResult(second);
                numberExtractorAndPrintResult(third);
                System.out.println();
            } else {
                System.out.println("Valid message not found!");
            }
        }
    }

    private static void numberExtractorAndPrintResult(String group) {
        group = group.replace("[", "").replace("]", "");
        int number = Integer.parseInt(group);
        System.out.printf("%c", (char) number);
    }
}