Combine Programming Challenges #$7$ and #$8$ into one program. Encrypt a file, then decrypt the file. Take a simple text file and encrypt it$.$ Then take the encrypted file and decrypt it$.$ Submit your combined program's java source file.

I have provided the code for Programming Challenge below and need help combining them please.

Programing challenge #$7$

import

java.io$.*$;

import java.util.scanner;

public class FileEncryptionFilterdemo

l

public static void main$($string args$[])$ throws

IOException

$($

$//$ open a file to read

File file $=$ new File$("$filel$.$txt$")$;

Scanner inputFile $=$ new scanner$($file$)$;

$//$ open a file to write

Printwriter outputFile $=$ new

PrintWriter$("$file$2.$txt$")$;

$//$read lines from the file until no more are:

while $($inputFile$.$hasNext$())$

$($

$//$ read the next line

String str $=$ inputFile.nestLine$()$;

for$($int i $=0$; i $$ str$.$length$()$; i$++)$

$($

$//$ get a character at a time

ohar ch $=$ str$.$charAt $($i$)$;

$//$ change the character into code

int code $=($int$)$ch;

$/*$ modify the code and change into

character $*/$

ohar c $=($ohax$)($code $+10)$;

$/*$ print the modified code in the

output file $*/$

outputFile.print $($c$)$;

import

java.io$.*$;

$($

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

IOException

$\{$

$//$ open a file to read

File file $=$ new File$("$file$2.$txt$")$;

scanner inputFile $=$ new scanner$($file$)$;

$//$ open a file to write

Printmriter outputFile $=$ new

Printwriter$("$file$3.$tst$")$;

$//$read lines from the file until no more are left

while $($inputFile$.$hasNext $())$

$\{$

$//$ read the next line

String str $=$ inputFile.nextLine$()$;

for$($int i $=0$; i $$ str$.$length$()$; i$++)$

$\{$

$//$ get a character at a time

char ch $=$ str$.$charAt $($i$)$;

$//$ change the character into code

int code $=($int$)$ch;

$/*$ modify the code and change into

character $*/$

char c $=($char$)($code $-10)$;

$/*$ print the modified code in the

output file $*/$

outputFile.print $($c$)$;

outputEile.println$()$;

$\}$

inputFile.close$()$;

outputFile.println$()$;

outputEile.close$()$;

inputese two files

$\%$urile.close$())$

outputEile.close$(),$

$//$ end of main method

$//$ end of main method

$\}//$ end of EileDecriptionFilderDemo class