Write a java class called BookShelf the implies the following instrutions.

$$ Contains a character representing the first letter of the title of each book in this shelf

$$ Contains an ArrayList of Books. This should contain a maximum of eight books

$$ Implements a default constructor and getter$/$setters for the above

$$ Implements a void method that will add a Book to this shelf if the Book's title begins with the correct letter for the shelf. If the Book is not appropriate for this shelf, simply return

$$ Implements a void method that will remove a Book from this shelf

$$ Implements and overrides the ToString$()$ method, which will print each Book title in the shelf on a single line. Each title should be separated by three spaces. If there are no books in the shelf, print $$Empty$$ instead.