import java.util.Scanner;

$//$ TASK #$1$ Add the file I$/$O import statement here

import java.text.DecimalFormat;

import java.io$.$BufferedReader;

import java.io$.$FileReader;

import java.io$.$FileWriter;

import java.io$.$PrintWriter;

import java.io$.$IOException;

$/**$

This class reads numbers from a file, calculates the

mean and standard deviation, and writes the results

to a file.

$*/$

public class StatsDemo

$\{$

$//$ TASK #$1$ Add the throws clause

public static void main$($String$[]$ args$)$ throws IOException

$\{$

double sum $=0$; $//$ The sum of the numbers

int count $=0$; $//$ The number of numbers added

double mean $=0$; $//$ The average of the numbers

double stdDev $=0$; $//$ The standard deviation

String line; $//$ To hold a line from the file

double difference; $//$ The value and mean difference

$//$ Create an object of type Scanner

Scanner keyboard $=$ new Scanner $($System$.$in$)$;

String filename; $//$ The user input file name

$//$ Prompt the user and read in the file name

System.out.println$("$This program calculates $"+$

"statistics on a file $"+$

"containing a series of numbers"$)$;

System.out.print$("$Enter the file name: $")$;

filename $=$ keyboard.nextLine$()$;

$//$ ADD LINES FOR TASK #$2$ HERE

$//$ Create a FileReader object passing it the filename

FileReader readfile $=$ new FileReader$($filename$)$;

$//$ Create a BufferedReader object passing FileReader object

BufferedReader buffer $=$ new BufferedReader$($readfile$)$;

$//$ Perform a priming read to read the first line of

$//$ the file

line $=$ buffer.readLine$()$;

$//$ Loop until you are at the end of the file

while$($line $!=$ null$)\{$

$//$ Convert the line to a double value and add the

$//$ value to sum

sum $=$ sum $+$ Double.parseDouble$($line$)$;

$//$ Increment the counter

count$++$;

$//$ Read a new line from the file

line $=$ buffer.readLine$()$;

$\}$

$//$ Close the input file

buffer.close$()$;

$//$ Store the calculated mean

mean $=$ sum$/$count;

$//$ ADD LINES FOR TASK #$3$ HERE

$//$ Reconnect FileReader object passing it the

$//$ filename

readfile $=$ new FileReader$($filename$)$;

$//$ Reconnect BufferedReader object passing

$//$ FileReader object

buffer $=$ new BufferedReader$($readfile$)$;

$//$ Reinitialize the sum of the numbers

sum $=0$;

$//$ Reinitialize the number of numbers added

count $=0$;

$//$ Perform a priming read to read the first line of

$//$ the file

line $=$ buffer.readLine$()$;

$//$ Loop until you are at the end of the file

while$($line $!=$ null$)$;

$//$ Convert the line into a double value and

$//$ subtract the mean

difference $=$ Double.parseDouble$($line$)-$ mean;

$//$ Add the square of the difference to the sum

sum $=$ sum $+($difference $*$ difference$)$;

$//$ Increment the counter

count$++$;

$//$ Read a new line from the file

line $=$ buffer.readLine$()$;

$//$ Close the input file

buffer.close$()$;

$//$ Store the calculated standard deviation

stdDev $=$ Math.sqrt$($sum$/$count$)$;

$//$ ADD LINES FOR TASK #$1$ HERE

$//$three decimal format

DecimalFormat threeDec $=$ new DecimalFormat$("0\mathrm{.}000")$;

$//$ Create a FileWriter object using "Results.txt$"$

FileWriter outfile $=$ new FileWriter$("$Results$.$txt$")$;

$//$ Create a PrintWriter object passing the FileWriter object

PrintWriter printfile $=$ new PrintWriter$($outfile$)$;

$//$ Print the results to the output file

printfile.format$("$Mean $=\%$s$,$ Standard Deviation $=\%$s

$",$

threeDec.format$($mean$),$ threeDec.format$($stdDev$))$;

$//$ Close the output file

printfile.close$()$;

$\}$

$\}$

This program calculates statistics on a file containing a series of numbers

Enter the file name: Numbers.txt

Exception in thread "main" java.io$.$FileNotFoundException: Numbers.txt $($No such file or directory$)$

at java.base$/$java$.$io$.$FileInputStream.open$0($Native Method$)$

at java.base$/$java$.$io$.$FileInputStream.open$($FileInputStream$.$java:$216)$

at java.base$/$java$.$io$.$FileInputStream.$($FileInputStream$.$java:$157)$

at java.base$/$java$.$io$.$FileInputStream.$($FileInputStream$.$java:$111)$

at java.base$/$java$.$io$.$FileReader.$($FileReader$.$java:$60)$

at StatsDemo.main$($StatsDemo$.$java:$41)$

can somebody fix this code for me$.$

the Numbers.txt file is in Users$>$fr$132>$Downloads location