public class Solution { public static void main(String[] args) throws Exception { BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in)); String fileName = bufferedReader.readLine(); bufferedReader.close(); File file = new File(fileName); FileInputStream fileInputStream = new FileInputStream(file); int max = fileInputStream.read(); while (fileInputStream.available() > 0) { int data = fileInputStream.read(); if (data > max) max = data; } fileInputStream.close(); System.out.println("max - " + max); } }