why not?
package com.javarush.task.task18.task1816;
/*
Английские буквы
*/
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader bufferedReader = new BufferedReader(new FileReader(args[0]));
Pattern pattern = Pattern.compile("[A-Za-z]");
int symbol = bufferedReader.read();
String s = "";
while (symbol != -1) {
symbol = bufferedReader.read();
char c = (char) symbol;
s += c + " ";
}
String [] letter = s.split(" ");
int count = 0;
for (int i = 0; i < letter.length; i ++) {
Matcher matcher = pattern.matcher(letter[i]);
if(matcher.find()){
count++;
}
}
System.out.println(count);
}
}