I checked help and still don't know why it doesn't work.
package pl.codegym.task.task13.task1326;
/*
Sortowanie liczb parzystych z pliku
*/
import java.io.*;
import java.util.ArrayList;
import java.util.Collections;
public class Solution {
public static void main(String[] args) throws IOException {
//tutaj wpisz swój kod
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String fileName = reader.readLine();
FileInputStream inputStream = new FileInputStream(fileName);
BufferedReader fileReader = new BufferedReader(new InputStreamReader(inputStream));
String line = "";
Integer number = 0;
ArrayList<Integer> lista = new ArrayList<>();
while ((line = fileReader.readLine()) != null) {
line = fileReader.readLine();
number = Integer.parseInt(line);
lista.add(number);
}
Collections.sort(lista);
for (int i = 0; i < lista.size(); i++) {
if (lista.get(i) % 2 == 0)
System.out.println(lista.get(i));
}
inputStream.close();
}
}