Matching {x} Repetitions

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    Java 15

    import java.io.*;
    import java.util.*;
    import java.util.regex.Pattern;
    import java.util.regex.Matcher;
    
    public class Solution {
        public static void main(String[] args) {
            Scanner scanner = new Scanner(System.in);
            Pattern pattern = Pattern.compile("^[a-zA-Z02468]{40}[13579\\s]{5}$");
            Matcher matcher = pattern.matcher(scanner.nextLine());
            boolean found = matcher.find();
            System.out.println(found);
        }
    }