В чем ошибка? Хелп...
package com.javarush.task.task18.task1820;
import java.io.BufferedReader;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.FileReader;
import java.io.FileInputStream;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.ArrayList;
import java.math.RoundingMode;
/*
Округление чисел
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String a= reader.readLine();
BufferedReader reader1 = new BufferedReader(new FileReader(a));
String b= reader.readLine();
FileOutputStream f2 = new FileOutputStream(b, true);
// FileInputStream f1 = new FileInputStream(a);
String line;
// byte[] buff = new byte[f1.available()];
while((line = reader1.readLine()) != null){
String[] words = line.split(" ");
for (String word: words){
if(!word.isEmpty()){
BigDecimal number = new BigDecimal(word);
String n = " ";
byte[] bb = n.getBytes();
f2.write((number.setScale(1, RoundingMode.HALF_UP)).byteValue());
f2.write(bb);
}
}
}
f2.close();
reader.close();
reader1.close();
}
}