Вроде всё соответствует условиям...
package com.javarush.task.task13.task1326;
/*
Сортировка четных чисел из файла
*/
import java.io.*;
import java.util.ArrayList;
import java.util.Collections;
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
File theFile = new File(reader.readLine());
FileInputStream fileInputStream = new FileInputStream(theFile);
FileReader fileReader = new FileReader(theFile);
BufferedReader buffer = new BufferedReader(fileReader);
fileInputStream.close();
try {
String line;
ArrayList<Integer> numbers = new ArrayList<>();
while ((line = buffer.readLine()) != null) {
int x = Integer.parseInt(line);
if (x % 2 == 0) {
numbers.add(x);
}
}
Collections.sort(numbers);
for (int numba : numbers) System.out.println(numba);
} catch (Exception e) {e.printStackTrace();}
buffer.close();
fileReader.close();
reader.close();
}
}