Вроде всё ок, да не ок( Проверял - работает. Буду рад помощи
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;
import java.util.Arrays;
import java.util.StringJoiner;
/*
Длинные слова
*/
public class Solution {
public static void main(String[] args) {
String fileName1 = args[0];
String fileName2 = args[1];
StringJoiner joiner = new StringJoiner(",");
try (BufferedReader reader = new BufferedReader(new FileReader(fileName1));
FileWriter writer = new FileWriter(fileName2, true)){
while (reader.ready()){
String str = reader.readLine();
String[] strings = Arrays.stream(str.split(" ")).filter(x -> x.length() > 6).toArray(String[]::new);
for (String element: strings) {
joiner.add(element);
}
}
writer.write(joiner.toString());
} catch (IOException e) {
}
}
}
