Write a Java program for file/directory processingaccording to the following rules. The program requested for this project must have a text menulike this:0 – Exit1 – Select directory2 – List directory content (first level)3 – List directory content (all levels)4 – Delete file5 – Display file (hexadecimal view)6 – Encrypt file (XOR with password)7 – Decrypt file (XOR with password)Select option:The menu is displayed and the user must select an option (a number between 0 and 7). Theaction corresponding to the selection is performed, then the menu is displayed again and theuser can choose another option. This cycle is repeated until the user selects 0, which exits theloop and ends the program.The options are:0 – ExitThis options ends the program1 – Select directoryThe user is prompted for a directory [absolute] name. This is the first options that must beselected by the user. All the options below are working on the directory selected here. Afterperforming several operations on the selected directory, the user can select another directoryand work with it.2 – List directory content (first level)This option displays the content of the selected directory on the screen. All the files and subdirectoriesfrom the first level must be displayed (files and directories should be listedseparately). If no directory was selected an error message must be displayed.3 – List directory content (all levels)This option displays the content of the selected directory on the screen. All the files and subdirectoriesfrom the first and subsequent levels must be displayed (files and directories shouldbe listed separately). If no directory was selected an error message must be displayed.4 – Delete fileThis option prompts the user for a filename and deletes that file from the selected directory. Ifno directory was selected an error message must be displayed. If the directory does not containthe file specified by the user, an error message must be displayed. The filename does notinclude any path, it’s just the name of the file.5 – Display file (hexadecimal view) This option prompts the user for a filename (from the selected directory) and displays thecontent of that file on the screen, in hexadecimal view. If no directory was selected an errormessage must be displayed. If the directory does not contain the file specified by the user, anerror message must be displayed. The filename does not include any path, it’s just the name ofthe file.Note 1: The hexadecimal view displays each byte of the file in hexadecimal; it should looksomething like this, but simpler:Note2: The ASCII representation, the Current Offset and the Value Preview are NOTrequired; also there is no window, no graphics, no colors, just black and white text display.Being a text only display, you are required to display ONLY the Data Offset and theHexadecimal Representation.6 – Encrypt file (XOR with password)This option prompts the user for a password (max 256 bytes long, may contain letters, digits,other characters) and then prompts the user for a filename and encrypts the content of theselected file using that password. The encryption method is very simple: just XOR thepassword with the file content byte after byte; the password being shorter than the file content,you must repeat the password as needed.Example:passwordpasswordpasswordpasswordpasswordpasswordpassthis is the file content that we need to encrypt nowchiphertext is obtained here by XORing byte to byteNote1: the user must be prompted for the filename of the encrypted file (containing theciphertext) as well, otherwise we would need to overwrite the initial file.Note2: If no directory was selected an error message must be displayed. If the directory doesnot contain either of the files specified by the user, an error message must be displayed. Thefilenames do not include any path.7 – Decrypt file (XOR with password)This option prompts the user for a password (max 256 bytes long, may contain letters, digits,other characters) and then prompts the user for a filename and decrypts the content of theselected file using that password. The decryption method is very simple: just XOR thepassword with the file content byte after byte; the password being shorter than the file content,you must repeat the password as needed.Example:passwordpasswordpasswordpasswordpasswordpasswordpasschiphertext is here …this is the file content that we had initiallyNote1: the user must be prompted for the filename of the decrypted file as well, otherwise wewould need to overwrite the initial file.Note2: it may seem strange that we are using the same operation (XOR) both for encryptionand for decryption, but this is how XOR (exclusive OR) works.Note3: If no directory was selected an error message must be displayed. If the directory doesnot contain either of the files specified by the user, an error message must be displayed. Thefilenames do not include any path.Testing:1. You should use this file as the test file for Display, Encryption and Decryption.2. For encryption, use the following password “Qwertyuiop[123$4$567]”3. After encrypting this file with the above password, you obtain an encrypted file of thesame length; after decrypting that file with the same password you should obtain anexact replica of this file, and this must be reflected in the Report document byappropriate screenshots showing the content of the files involved in these operations.Deliverables:1. Source code (zipped)2. A Report showing the program performing each of the 7 actions correctly (usescreenshots), plus screenshots showing the error reporting situations.

File/directory processing
Write a Java, C# or C/C++ program (the choice is yours) for file/directory processing
according to the following rules. The program requested for this project must have a text menu
like this:
0 – Exit
1 – Select directory
2 – List directory content (first level)
3 – List directory content (all levels)
4 – Delete file
5 – Display file (hexadecimal view)
6 – Encrypt file (XOR with password)
7 – Decrypt file (XOR with password)
Select option:
The menu is displayed and the user must select an option (a number between 0 and 7). The
action corresponding to the selection is performed, then the menu is displayed again and the
user can choose another option. This cycle is repeated until the user selects 0, which exits the
loop and ends the program.
The options are:
0 – Exit
This options ends the program
1 – Select directory
The user is prompted for a directory [absolute] name. This is the first options that must be
selected by the user. All the options below are working on the directory selected here. After
performing several operations on the selected directory, the user can select another directory
and work with it.
2 – List directory content (first level)
This option displays the content of the selected directory on the screen. All the files and subdirectories from the first level must be displayed (files and directories should be listed
separately). If no directory was selected an error message must be displayed.
3 – List directory content (all levels)
This option displays the content of the selected directory on the screen. All the files and subdirectories from the first and subsequent levels must be displayed (files and directories should
be listed separately). If no directory was selected an error message must be displayed.
4 – Delete file
This option prompts the user for a filename and deletes that file from the selected directory. If
no directory was selected an error message must be displayed. If the directory does not contain
the file specified by the user, an error message must be displayed. The filename does not
include any path, it’s just the name of the file.
5 – Display file (hexadecimal view) This option prompts the user for a filename (from the selected directory) and displays the
content of that file on the screen, in hexadecimal view. If no directory was selected an error
message must be displayed. If the directory does not contain the file specified by the user, an
error message must be displayed. The filename does not include any path, it’s just the name of
the file.
Note 1: The hexadecimal view displays each byte of the file in hexadecimal; it should look
something like this, but simpler: Note2: The ASCII representation, the Current Offset and the Value Preview are NOT
required; also there is no window, no graphics, no colors, just black and white text display.
Being a text only display, you are required to display ONLY the Data Offset and the
Hexadecimal Representation.
6 – Encrypt file (XOR with password)
This option prompts the user for a password (max 256 bytes long, may contain letters, digits,
other characters) and then prompts the user for a filename and encrypts the content of the
selected file using that password. The encryption method is very simple: just XOR the
password with the file content byte after byte; the password being shorter than the file content,
you must repeat the password as needed.
Example:
passwordpasswordpasswordpasswordpasswordpasswordpass
this is the file content that we need to encrypt now
chiphertext is obtained here by XORing byte to byte
Note1: the user must be prompted for the filename of the encrypted file (containing the
ciphertext) as well, otherwise we would need to overwrite the initial file. Note2: If no directory was selected an error message must be displayed. If the directory does
not contain either of the files specified by the user, an error message must be displayed. The
filenames do not include any path.
7 – Decrypt file (XOR with password)
This option prompts the user for a password (max 256 bytes long, may contain letters, digits,
other characters) and then prompts the user for a filename and decrypts the content of the
selected file using that password. The decryption method is very simple: just XOR the
password with the file content byte after byte; the password being shorter than the file content,
you must repeat the password as needed.
Example:
passwordpasswordpasswordpasswordpasswordpasswordpass
chiphertext is here …
this is the file content that we had initially
Note1: the user must be prompted for the filename of the decrypted file as well, otherwise we
would need to overwrite the initial file.
Note2: it may seem strange that we are using the same operation (XOR) both for encryption
and for decryption, but this is how XOR (exclusive OR) works.
Note3: If no directory was selected an error message must be displayed. If the directory does
not contain either of the files specified by the user, an error message must be displayed. The
filenames do not include any path.
Testing:
1. You should use this file as the test file for Display, Encryption and Decryption.
2. For encryption, use the following password “Qwertyuiop[123$4$567]”
3. After encrypting this file with the above password, you obtain an encrypted file of the
same length; after decrypting that file with the same password you should obtain an
exact replica of this file, and this must be reflected in the Report document by
appropriate screenshots showing the content of the files involved in these operations.
Deliverables:
1. Source code (zipped)
2. A Report showing the program performing each of the 7 actions correctly (use
screenshots), plus screenshots showing the error reporting situations.

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