Modify the code to display guessed letters under the “used letters” in the Hangman GUI window.

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JAVA OOP that is run in IntelliJ IDEA:

TO DO:

(1) Modify the code to display guessed letters under the “used letters” in the Hangman GUI window. (hangmanfix.zip)

(2) Implement at least 15 possible JUnit test cases in the ModifyFile Program (a client-server-based program). (ModifyFile.zip)