Где моя ошибка?
package com.javarush.task.task18.task1816;
/*
Английские буквы
*/
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
public class Solution {
public static void main(String[] args) throws IOException {
FileInputStream input = new FileInputStream(args[0]);
int count = 0;
byte[] bytes = new byte[input.available()];
input.close();
for(byte i: bytes){
if(i>64 & i<91 || i>96 & i<123){
count++;}
}
System.out.println(count + " ");
}
}