Can u tell me what is wrong with it?
package pl.codegym.task.task18.task1808;
/*
Dzielenie pliku
*/
import java.io.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String file1 = reader.readLine();
String file2 = reader.readLine();
String file3 = reader.readLine();
FileInputStream inputStream = new FileInputStream(file1);
FileOutputStream outputStream1 = new FileOutputStream(file2);
FileOutputStream outputStream2 = new FileOutputStream(file3);
ArrayList<Integer> list = new ArrayList<>();
while(inputStream.available() > 0) {
int bytes = inputStream.read();
list.add(bytes);
}
int howMuchBytes = 0;
int firstHalf = 0;
int secondHalf = 0;
for (int i = 0; i < list.size(); i++){
howMuchBytes ++;
}
firstHalf = howMuchBytes/2;
secondHalf = howMuchBytes/2;
int count = 0;
if (firstHalf%2!=0){
secondHalf++;
}
for (int i = 0; i < firstHalf; i++){
int bytes = inputStream.read();
outputStream1.write(bytes);
}
while(inputStream.available() > 0) {
int bytes = inputStream.read();
count++;
if (count==secondHalf){
outputStream2.write(bytes);
}
}
inputStream.close();
outputStream1.close();
outputStream2.close();
}
}