пожалуйста
package com.javarush.task.task19.task1925;
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]));
String line = "";
while ((line=reader.readLine())!=null){
String[] cells = line.split(" ");
for (String i: cells) {
if (i.length() > 6) {
writer.write(i);
if (reader.ready()){
writer.write(",");
}
}
}
}
reader.close();writer.close();
}
}