Playfair cipher Program plan: In the file “ PlayfairCipher.java ”, import necessary packages and create a class “ PlayfairCipher”, Declare a string variable, and a 2D array. Define the constructor to initialize the array. Define the method “processStream()” to process the contents of a stream. Define the method “process()” to process a stream. Define the method “makeEncryptionKey()” to make an encryption key. Define the method “found()” to determine if a character is found. In the file “ Encryptor.java ”, import necessary packages and create a class “ Encryptor”, Define the method “main()”, Initialize the necessary variables. Execute “try” statement, Initialize the variable. Execute “while” loop till the length of the argument, Check if the argument is “-k”, Increment the value by 1. Check the condition, If it is true, set the key. Otherwise, if the input file is null, Get the input file. Otherwise, if the output file is null, Get the output file. If either the input or output or key is null, Print the string. Otherwise, Create the input stream. Create the output stream. Create an object for “PlayfairCipher”. Call the method “processStream()”. Close the input and output file. Catch if exception occur, Handle the exception.

Question

Want to see the full answer?

Answer 1

Question

Chapter 21, Problem 4PP

Program Plan Intro

Playfair cipher

Program plan:

In the file “PlayfairCipher.java”, import necessary packages and create a class “PlayfairCipher”,

Declare a string variable, and a 2D array.

Define the constructor to initialize the array.

Define the method “processStream()” to process the contents of a stream.

Define the method “process()” to process a stream.

Define the method “makeEncryptionKey()” to make an encryption key.

Define the method “found()” to determine if a character is found.

In the file “Encryptor.java”, import necessary packages and create a class “Encryptor”,

Define the method “main()”,

Initialize the necessary variables.

Execute “try” statement,

Initialize the variable.

Execute “while” loop till the length of the argument,

Check if the argument is “-k”,

Increment the value by 1.

Check the condition,

If it is true, set the key.

Otherwise, if the input file is null,

Get the input file.

Otherwise, if the output file is null,

Get the output file.

If either the input or output or key is null,

Print the string.

Otherwise,

Create the input stream.

Create the output stream.

Create an object for “PlayfairCipher”.

Call the method “processStream()”.

Close the input and output file.

Catch if exception occur,

Handle the exception.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

The images I have uploaded are the part 1 to 4 and questions below are continue on the questions uploaded 5. C++ Class Template with Method Stubs #pragma once #include <iostream> #include <string> #include <stdexcept> #include <vector> template <typename T> class HashTable { private: struct Entry { std::string key; T value; bool isOccupied; bool isDeleted; Entry() : key(""), value(), isOccupied(false), isDeleted(false) {} }; Entry* table; size_t capacity; size_t size; double loadFactorThreshold; size_t customHash(const std::string& key) const { size_t hash = 5381; for (char c : key) { hash = ((hash << 5) + hash) + c; } return hash; } size_t probe(const std::string& key, bool forInsert = false) const; void resize(); public: // Constructor HashTable(size_t initialCapacity = 101); // Big…

this project is NOT for graded(marks) purposes, please help me with the introduction. give me answers for the project. i will include an image explaining everything about the project.

Java Graphics (Bonus In this lab, we'll be practicing what we learned about GUIs, and Mouse events. You will need to implement the following: A GUI with a drawing panel. We can click in this panel, and you will capture those clicks as a Point (see java.awt.Point) in a PointCollection class (you need to build this). The points need to be represented by circles. Below the drawing panel, you will need 5 buttons: O о о ○ An input button to register your mouse to the drawing panel. A show button to paint the points in your collection on the drawing panel. A button to shift all the points to the left by 50 pixels. The x position of the points is not allowed to go below zero. Another button to shift all the points to the right 50 pixels. " The x position of the points cannot go further than the You can implement this GUI in any way you choose. I suggest using the BorderLayout for a panel containing the buttons, and a GridLayout to hold the drawing panel and button panels. Regardless of how…