Вот такая ошибка, никто ранее не сталкивался?
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package com.javarush.task.task18.task1805;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.Set;
import java.util.TreeSet;
/*
Сортировка байт
C:\Users\Aleksandr Sergeev\Downloads\test - Copy.txt
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
FileInputStream fileReader = new FileInputStream(reader.readLine());
byte[] allBytes = new byte[fileReader.available()];
while (fileReader.available() > 0) {
allBytes = fileReader.readAllBytes();
}
fileReader.close();
TreeSet<Byte> treeSet = new TreeSet<>();
for (int i = 0; i < allBytes.length; i++) {
treeSet.add(allBytes[i]);
}
for(Byte x : treeSet) {
System.out.print(x + " ");
}
}
}