В чем проблема?

public class New {
    public static void main(String[] args) throws IOException {
        BufferedReader consoleReader = new BufferedReader(new InputStreamReader(System.in));
        String fileName = consoleReader.readLine();

        List<Integer> numbers = new ArrayList<Integer>();
        FileInputStream inputStream = new FileInputStream(fileName);
        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));

        String str;
        while ((str = reader.readLine()) !=null) {
            int i = Integer.parseInt(str);
            if (i % 2 == 0)
                numbers.add(i);
        }
            Collections.sort(numbers);
            for (Integer s : numbers)
                System.out.println(s);

            reader.close();

            consoleReader.close();

        }
    }