Class MessageApp

Object
MessageApp
public class MessageApp extends Object

  • Field Details

  • Constructor Details

    • MessageApp

      public MessageApp(ArrayList<OpenMessage> messages)
      Initialize the ArrayList of OpenMessages
      Parameters:
      messages - ArrayList of OpenMessages

  • Method Details

    • go

      public void go()
      Runs the program, keep going until user input is "x". If "x" is entered, stop the program.

    • processCommand

      public void processCommand(String command)
      Checks the command (options from the menu) and calls appropriate methods for its functionality. Does nothing if a command is not known (no need for help dialog). Add additional check for if command is "c". If so, compose a message and print a statement such as "Message composed." Remember to use helper methods! The composeHelper() method is there to keep clutter out of the processCommand() method.
      Parameters:
      command - command entered by user

    • searchHelper

      private String searchHelper()
      Asks user for what type of search and what they are searching for, then returns the message if found. Implemented in Lab 10.
      Returns:
      String that is a list of all messages found that satisfy the search

    • composeHelper

      public void composeHelper()
      Composes an OpenMessage.

      Implementation Hints:

      • Get input from user about TO, FROM, SUBJECT, and BODY information.
      • Create a new OpenMessage object with that stored information and add it to your OpenMessages ArrayList.
      • Ask user what file they would like to write the message to.
      • Inside a try/catch block, make a new PrintWriter to the file the user chose.
      • Make a new Key object and initialize it with id = 1, shift = 3. NOTE: We are hard-coding in the Caesar Cipher with a shift of three here, we will change this in Lab 14 to make the encryption process more secure!
      • Encrypt the message using the message's toString() and the Key.
      • Print to the PrintWriter both the encrypted and decrypted message.
      • Don't forget to close your PrintWriter and catch a FileNotFoundException!

    • main

      public static void main(String[] args)