EBK BIG JAVA: EARLY OBJECTS, INTERACTIV
EBK BIG JAVA: EARLY OBJECTS, INTERACTIV
6th Edition
ISBN: 8220102010314
Author: Horstmann
Publisher: YUZU
Question
Book Icon
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.

Blurred answer
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…
Knowledge Booster
Background pattern image
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Text book image
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Text book image
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
Text book image
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Text book image
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Text book image
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education