Подскажите в чём ошибка?
package com.javarush.task.task19.task1925;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
/*
Длинные слова
*/
public class Solution {
public static void main(String[] args) throws IOException {
String fileName;
try(BufferedReader bufferedReader = new BufferedReader(new FileReader(args[0]));
FileWriter fw = new FileWriter(args[1])){
while(bufferedReader.ready()){
String[] split = bufferedReader.readLine().split(" ");
for(String s : split){
if(s.matches("\\w{7,}")){
fw.write(s + ",");
}
}
}
}
}
}