Using constructs from this chapter or earlier, combine Programming Challenges #$7$ and #$8$ on page $756$ 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.

You also need to include at least one screenshot of the results. Your screenshot needs to display your name somewhere in the results.

Avoid poor programming practices in your assignments. Many web sites contain programs that are poorly written. The text contains many examples of programs that use good programming practices. Use the text as a guide.

You should have comments in your program to explain what your program is doing. They should be meaningful comments. I will deduct points if you don$$t have comments.

You should have only one exit point from your program and any methods. $($Do not have multiple return statements$).$ I may deduct points if you have multiple exit points.

Do not use the word "invalid" in any user message as it has multiple meanings. I will deduct points if you use $$invalid$.$

You should use appropriate and meaningful variable names. I will deduct points if you use single letter variable names or names that don$$t reflect the usage of the variable.

Do not use break, continue, or intentional infinite loops $($while true$)$ in your program to alter the program flow. Fix your logic. I will deduct points if you do$.$

You should use appropriate user prompts. They should be simple, accurate, have good grammar, and not have any misspellings. I may deduct points if you have confusing prompts.

You should properly label and format output or results. It should be obvious what your results mean. I will deduct points if your output or results are confusing or not formatted as they should be $($for example, currency should either have $0$ or $2$ decimal places$).$

Each assignment starts with the words "using constructs from this chapter or earlier." You can only use concepts from the chapter the assignment is from, or previous chapters. I will deduct points if you use things we haven't covered or are not in the text.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