округляет в меньшую сторону, все работает...
package com.javarush.task.task18.task1817;
import java.io.FileReader;
import java.io.IOException;
/*
Пробелы
*/
public class Solution {
public static void main(String[] args) throws IOException {
FileReader fileReader = new FileReader(args[0]);
char[] buffer = new char[1000];
double countOfAllSymbols = fileReader.read(buffer);
double countOfSpaceBars = 0;
for (char c : buffer) {
int temp = c;
if (temp == 32) {
countOfSpaceBars++;
}
}
double temp = countOfSpaceBars / countOfAllSymbols * 100;
double result = Math.floor(temp * 100.0) / 100.0;
System.out.println(result);
fileReader.close();
}
}