Created SubsitutionCipher class and added the key field.
Added constructors and skeletons of the encode and decode methods.
Initial commit of SubtitutionCipher tests.
Initial version of encode and decode methods, currently untested.
Added getKey() and setKey() methods. Made sAlphabet final. setKey() needs some sort of error message.
Added checks in encode() and decode() so they ignore everything that is not a letter. These methods also do not currently work. They end up returning the input string instead of actually encoding or decoding.
Changed setKey() so that the input will always be uppercase.
Made changes to encode() and decode(). They now call private methods encodeChar() and decodeChar() respectively to get the encoded letter. I also changed the if statements in both to use Character.isLetter()
Tests for encode() and decode().
Updated author
Test added for changing key
Removed need for encodeChar() and decodeChar() and commented those methods out. I also cleaned up the encode() and decode() methods by removing the use of ch.