Message Decrypter

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 lines = Integer.parseInt(scanner.nextLine());

        Pattern pattern = Pattern.compile("^([$\\%])(?<tag>[A-Z][a-z]{2,})\\1: \\[(?<num1>[\\d]+)\\]\\|\\[(?<num2>[\\d]+)\\]\\|\\[(?<num3>[\\d]+)\\]\\|$");

        for (int i = 0; i < lines; i++) {
            String input = scanner.nextLine();
            Matcher matcher = pattern.matcher(input);

            if (matcher.find()){
                String tag = matcher.group("tag");
                int s1 = Integer.parseInt(matcher.group("num1"));
                int s2 = Integer.parseInt(matcher.group("num2"));
                int s3 = Integer.parseInt(matcher.group("num3"));

                StringBuilder text = new StringBuilder();
                text.append((char) s1);
                text.append((char) s2);
                text.append((char) s3);

                System.out.println(String.format("%s: %s", tag, text));
            }else {
                System.out.println("Valid message not found!");
            }
        }
    }
}