но могу округлить.
package com.javarush.task.task18.task1817;
/*
Пробелы
*/
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
public class Solution {
public static void main(String[] args) throws IOException {
FileInputStream inputStream = new FileInputStream(args[0]);
int spaseCounter = 0;
int characterCounter = 0;
while (inputStream.available() > 0){
int i = inputStream.read();
if (i == 32){
spaseCounter++;
}
else characterCounter++;
}
float result = (float)spaseCounter/(float)characterCounter * 100.0f;
System.out.format("%.2f", result);
inputStream.close();
}
}