меня подводят строка 15 и 4 пункт валидации
package com.javarush.task.task18.task1808;
/*
Разделение файла
*/
import java.io.*;
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
FileInputStream file1 = new FileInputStream(reader.readLine());
FileOutputStream file2 = new FileOutputStream(reader.readLine());
FileOutputStream file3 = new FileOutputStream(reader.readLine());
byte [] buff = new byte[file1.available()*2];
if (file1.available()>0) {
int count = file1.read(buff);
if (count%2==0) {
file2.write(buff, 0, count/2);
file3.write(buff, count/2, count);
} else {
file2.write(buff, 0, count/2+1);
file3.write(buff, count/2+1, count);
}
}
file1.close();
file2.close();
file3.close();
}
}