BookData

Define a class BookData that keeps track of information for a book and how it is rated by customers (real numbers between 0.0 and 5.0). The class has the following public methods:

BookData(title, author) -- constructs a BookData object with the given title and author

review(rating) -- records a review for the book with given rating

getTitle() -- returns the title of the book

getRating() -- returns the average of all ratings (0.0 if none)

getNumReviews() -- returns the number of reviews the book has received

toString() -- returns a String with title, author, average rating, and number of reviews

The program should be written in Java.

Below is an example for a book that has been reviewed four times: BookData book = new BookData("1984", "George Orwell"); book. review (4.7); book.review (5); book.review(4.9); book. review (4.9); After these calls, the call book.getRating() would return 4.875 (the average of the ratings). The toString method should return a string of the form: , by , ( reviews) The rating should be truncated to a single digit after the decimal point. For example, given the previous calls, book.toString() would produce: "1984, by George Orwell, 4.8 (4 reviews)" i Tip: Casting a double to an int truncates the value. ex: (int) (3.6) = 3. We can utilize this trick to truncate at any decimal point: ex: (int) (10.0 * 3.777) / 10.0 = 3.7 (int) (100.0 * 3.777) / 100.0 = 3.77 If a book has been reviewed just once, then toString should include the grammatically correct text "1 review" rather than "1 reviews". The BookData class should also implement the Comparable interface. Books that have a higher average rating should be considered "less" than other books so that they appear at the beginning of a sorted list. You should use the complete value of the average rating rather than the truncated value displayed by toString. Books that have the same average rating should be ordered by the number of reviews, with books that have been reviewed more often considered "less" than books that have been reviewed less frequently, Books with the same average rating and number of reviews should be compared lexicographically by title (case sensitively)