Please help me with this assignment I have in Java.

$(20$ points$)$The program for obtaining the frequency of each letter and two letter combinations in the

ciphertext.

$(15$ points$)$ The program to decrypt the document using a key.

You can choose the programming language you like, but you should implement the file processing $($e$.$g$.$ read in

the file in$,$ find the counts and frequency of each letter, replace the ciphertext letter with the plaintext letter in

the file, and then write the tentative plaintext into a file$)$ by yourself instead of just calling one method for

counting the frequency or replacing letters in a file.

$(20$ points$)$ Your analysis on the key that was used. This can be a word or text document. You should primarily

use the frequency analysis $($Single letter frequency and two letter frequency is likely enough$)$ and assist it with

analysis on chosen ciphertext using your knowledge with the English language $($refer to the example in Module $1$

Slide $52).$

$(5$ points$)$ The decrypted text $($plaintext$)$ corresponding to your ciphertext.

$($Bonus: $5$ points$)$ Try to decipher the following ciphertext that was encoded using a monoalphabetic cipher.

What is your conclusion in terms of the difficulty of deciphering this short document compared with the large

document assigned to you?

NVQ CUGGEHJZ NVUN MG QUGD NH JQAQAIQJ ITN VUJZ NH FJUFR MG FHAIMKUNMHK HW EHJZG

NVUN UJQ KHN JQSUNQZ.

M FUK WHSSHE DHT WHJ NVHTGUKZG HW AMSQG UKZ KHN XQN SHGN$.$ M ZH KHN WQUJ FHSZ HJ

WMJQ$,$ UKZ M KQMNVQJ QUN KHJ ZJMKR$,$ ITN M ZMGUCCQUJ EVQK NVQ GTK GQNG MK NVQ EQGN.

EVH UA M$?$