Class EncryptedMessageApp

Object

EncryptedMessageApp

public class EncryptedMessageApp
extends Object

Runs a basic message program. The goal of the program is to take in input from the console that is a line of text to encrypted or to compress. It will then take in a second line of input, which defines the type of action to take. The response will be printed to the screen, and the cycle will continue until someone types exit.

Field Summary

Fields

Modifier and Type	Field and Description
private Scanner	scanner Holds the scanner object, that is connected to System.in in the constructor.

Constructor Summary

Constructors

Constructor and Description
EncryptedMessageApp()

Method Summary

Modifier and Type	Method and Description
private void	askPrompt() Simply prints
private void	printExit() Prints an exit message.
private void	printSplash() Prints a splash screen.
void	run() The part that does the work of the program.
private void	typePrompt() Prints the value from StringManipulator.OPTIONS with a colon and space.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

scanner

private final Scanner scanner

Holds the scanner object, that is connected to System.in in the constructor. Hint, look at P1 view class.

Constructor Detail

EncryptedMessageApp

public EncryptedMessageApp()

Method Detail

askPrompt

private void askPrompt()

Simply prints

     Enter Message:
 

There is a single space after the colon. Make sure to use print and not println.

printExit

private void printExit()

Prints an exit message. Have fun!

printSplash

private void printSplash()

Prints a splash screen. Have fun!

run

public void run()

The part that does the work of the program. Will end and exist with a printSplash() and printExit(), but in the middle, will loop until exit is typed into the message request. The program execution can look as follows

 === Practical 2 ===
 Enter Message: Hello World
 Cipher,Encode,Compress: cipher:1
 Ifmmp!Xpsme
 Enter Message: Hello World
 Cipher,Encode,Compress: compress
 Hll Wrld
 Enter Message: exit
 Have fun!
 

Notice it continues to loop, ask for the user input, and then calls StringManipulator.manipulate(String, String) once both inputs are provided.

Implementation Notes:

• Use lowercase on the type of manipulation before calling manipulate
• Spacing doesn't matter, but spelling does.
• You will need an if/else inside of the loop to check for exit.
• scanner will be needed. in particular .nextLine()

typePrompt

private void typePrompt()

Prints the value from StringManipulator.OPTIONS with a colon and space. We used printf, but you can use what you want.