Подскажите пожалуйста почему не выполняются пункты 3-5?

package com.javarush.task.task19.task1925;

import java.io.*;
import java.util.ArrayList;

/*
Длинные слова
*/

public class Solution {
    public static void main(String[] args) throws IOException {
        FileReader fileReader = new FileReader(args[0]);
        BufferedReader bufferedReader = new BufferedReader(fileReader);
        String line;
        String []arr;
        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(args[1]));
        while ((line = bufferedReader.readLine()) != null){
            arr = line.split(" ");
            for (int i = 0; i < arr.length; i++) {
                if(arr[i].length() > 6){
                    bufferedWriter.write(arr[i]);
                }
                if(i + 1 != arr.length )bufferedWriter.write(",");
            }
        }
        fileReader.close();
        bufferedReader.close();
        bufferedWriter.close();
    }
}

StringJoiner result = new StringJoiner(",");

String content = Arrays.stream(line.split(" "))
                       .filter(word -> word.length() > 6)
                       .collect(Collectors.joining(","));