Не понимаю, почему много строк?
package com.javarush.task.task13.task1326;
/*
Сортировка четных чисел из файла
*/
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;
public class Solution {
public static void main(String[] args) {
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String fileName = reader.readLine();
FileInputStream fileStream = new FileInputStream(fileName);
ArrayList<Integer> numbers = new ArrayList<Integer>();
int i = -1;
while ((i=fileStream.read())!=-1) {
if (i % 2 == 0) numbers.add(i);
}
Collections.sort(numbers);
for (Integer nums : numbers) {
System.out.println(nums);
}
reader.close();
fileStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
