The file must be called <YourNameProg3.java> Example: KenDeweyProg3.java Ensure

Question

The file must be called <YourNameProg3.java>

Example: KenDeweyProg3.java

Ensure you include ALL files required to make your program compile and run.
I would like to see your .java files only.

Proper coding conventions required the first letter of the class start with a capital letter and the first letter of each additional word start with a capital letter.


Style Requirements

Refer to the Java Coding Style Document.
Add comments as required for all .java files.


Overall Requirements

Provide a complete program that performs a simple substitution cipher. The program should take plain text and a shift value and produce the encrypted text. Then it should take encrypted text and a shift value and produce the plain text once again. A different encrypted text and shift can be entered so make sure to get input.

Example:
EASTER shifted by 3 to left would become HDVWHU
HWVDHU shifted by 3 to right would become EASTER

This is how the early Caesar Cipher worked.


YourNameProg3.java

Provide a main method. It should:

Get input for a string and a shift value
Convert to upper case
Only perform the following items on alphabetic characters between A and Z
Utilize a for loop which uses postfix incrementing operator
Convert character to its ASCII equivalent (type cast)
Shift buy shift value entered above
If you reach end of alphabet, wrap around
Example: A shifted to the left 2 would become Y
Convert back to its character equivalent (type cast)
Output the new character
Get input for a string and a shift value
Perform same steps above to convert the encrypted text back to plain text
Be sure to get input again as a different encrypted text may be entered
Utilize postfix increment/decrement operations and compound assignment operators for all math. Example: x++ or x+=2.


Mimic the sample session precisely.

Sample Session:

Please enter text to encrypteaster
Please enter shift value 3
BXPQBO
Please enter text to decrypt
bxpqbo
Please enter shift value
-3
EASTER
Press any key to continue . . .

Sample Session 2: : (Notice spaces removed from input)

Please enter text to encrypt
This Is A Test
Please enter shift value
3
QEFPFPXQBPQ
Please enter text to decrypt
qefpfpxqbpq
Please enter shift value
-3
THISISATEST
Press any key to continue . . .

Sample Session 3: (Notice the different shift and decrypt value)

Please enter text to encrypt
hello
Please enter shift value
3
EBIIL
Please enter text to decrypt
ebiil
Please enter shift value
5
ZWDDG
Press any key to continue . . .

Explanation / Answer

https://docs.google.com/viewer?a=v&q=cache:AJXpLFmFr5wJ:www.jsums.edu/cms/tues/docs/CSC450-Sp2011/Code-2-CaesarCipher.pdf+&hl=en&gl=in&pid=bl&srcid=ADGEESj6NHpMbA189kDq6v64Xp1qxMDZo9j6hA7O-JGY_ucOT70kDiZ-gpY-RLTnQyLCGmvClsVHA6eoHsVjnXe8VaEHJdBDrAgrEbUE1PhL03A3JMD5t01OuJYqqHOWRxU0mG79WqwE&sig=AHIEtbS2NTLmMbCnG5fZUFKc4eYmJ1vIDg

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