Отрабатывает корректно, но валидатор не пускает
package com.javarush.task.task19.task1925;
/*
Длинные слова
*/
import java.io.*;
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new FileReader(args[0]));
BufferedWriter writer = new BufferedWriter(new FileWriter(args[1]));
StringBuilder stringBuilder = new StringBuilder();
StringBuilder sb = new StringBuilder();
while (reader.ready()){
String line = reader.readLine();
stringBuilder.append(line);
}
reader.close();
String result[]=stringBuilder.toString().split(" ");
for (int i = 0; i <result.length; i++) {
if(result[i].length()>6){sb.append(result[i]+",");
}
}
writer.write(sb.deleteCharAt(sb.length()-1).toString());
writer.close();
}
}