Дополнительные лекции к уровню

public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Path path = Path.of(sc.nextLine());
        try (InputStream input = Files.newInputStream(path);
             Reader reader = new InputStreamReader(input);
             BufferedReader buffer = new BufferedReader(reader);
             Writer writer = new FileWriter("C:\\..\\..\\..\\..\\src\\test2")) {
            List<String> list = new ArrayList<>();
            String line;
            int countLines = 0;
            while ((line = buffer.readLine()) != null) {
                list.add(line);
                countLines++;
            }
            int countWords = 0;
            int countLetters = 0;
            int countLettersWithoutSpace = 0;
            for (String str : list) {
                countLetters += str.length();
                String[] strings = str.split("[ ,]+");
                countWords += strings.length;
                for (String s : strings) {countLettersWithoutSpace += s.length();}

            }
            System.out.println(list);
            System.out.println("Lines: " + countLines);
            System.out.println("Words: " + countWords);
            System.out.println("Letters: " + countLetters);
            System.out.println("Letters without SpaceBar: " + countLettersWithoutSpace);
            writer.write("Lines - " + countLines + "\nWords - " + countWords + "\nLetters - " + countLetters + "\nLetters without spase - " + countLettersWithoutSpace);
        } catch (Exception ignore) {
        }
    }