In cryptograms each character is encoded into another character. If the text is long enough, one can, as a strategy, use the frequency of occurrence of each character. The most frequently occurring character will likely be the code for an e, because e is the most frequently used letter of the English alphabet.

Design a class that attempts to determine the relative frequency of each letter by reading a file and keeping track of the number of times each of the 26 English alphabet characters appear. Also provide methods such as highestFrequencyCharacter and lowestFrequencyCharacter. As well as any other method you think would be appropriate.

Test your class with a client program with output