Почему то метод
fin2.write(String.valueOf(num)+ " ");package com.javarush.task.task18.task1820;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.List;
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(System.in));
String file = bufferedReader.readLine();
String file2 = bufferedReader.readLine();
BufferedReader fin = new BufferedReader(new FileReader(file));
BufferedWriter fin2 = new BufferedWriter(new FileWriter(file2));
bufferedReader.close();
String line;
while ((line = fin.readLine()) != null){
String [] string = line.split(" ");
for (int i = 0; i<string.length; i++){
int num = (int) Math.round(Double.parseDouble(string[i]));
fin2.write(String.valueOf(num)+ " ");
} } } }