Почему не проходит валидацию? Помогите пожалуйста.
package com.javarush.task.task18.task1801;
import java.io.FileInputStream;
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader =new BufferedReader(new InputStreamReader(System.in));
String fileName = reader.readLine();
reader.close();
FileInputStream inputStream = new FileInputStream("c:/" + fileName);
int maxByte = Integer.MIN_VALUE;
while (inputStream.available() > 0)
{
int data = inputStream.read();
if (data > maxByte){
maxByte = data;
}
}
inputStream.close();
if(maxByte == Integer.MIN_VALUE)
maxByte = 0;
System.out.println((byte)maxByte);
}
}