available$\_$copies: int

book$\_$copies: int

total$\_$available$\_$books: static int

Book$($ title : String, author : String, book$\_$copies : int $)$

borrow$\_$book $()$: void

return$\_$book $()$: void

set$\_$author$($String author$)$: void

get$\_$title $()$: String

get$\_$author $()$: String

get$\_$available$\_$copies $()$ : int

get$\_$book$\_$copies $()$ : int

get$\_$borrowed$\_$copies $()$: int

Attributes:

title: String $($Title of the book$)$

author: String $($Author of the book$)$

available$\_$copies: int $($Number of available copies of the book in the library, including only the unborrowed book$)$

book$\_$copies: int $($Number of copies of the book in the library or with borrowers, including the borrowed and unborrowed book$)$

total$\_$available$\_$books: static int $($Number of all the currently available copies of unborrowed books$)$

Methods:

Book$($title: String, author: String, book$\_$copies: int$)$: Constructor that initializes the book's title, author, and the total number of copies. It should set the available copies initially to the same as total copies. This method should update the static variable: total$\_$available$\_$books.

borrow$\_$book$()$: Decrements the available$\_$copies by $1$ when a book is borrowed. This method should update the static variable: total$\_$available$\_$books.

return$\_$book$()$: Increments the available$\_$copies by $1$ when a book is returned. This method should update the static variable: total$\_$available$\_$books.

set$\_$author$($author: String$)$: sets the author's name of the book.

get$\_$title$()$: Returns the title of the book.

get$\_$author$()$: Returns the author of the book.

get$\_$available$\_$copies$()$: Returns the number of available copies.

get$\_$book$\_$copies$()$: Returns the total number of copies $($including borrowed and unborrowed$).$

get$\_$borrowed$\_$copies$()$: Returns the number of borrowed copies.

$1-$ In Book Class, Write the code for the constructor described in the methods list

Book$($title: String, author: String, book$\_$copies: int$)$: Constructor that initializes the book's title, author, and the total number of copies. It should also set the available copies initially to the same value as the total copies. This method should also update the static variable: total$\_$available$\_$books by adding the book$\_$copies to it$.$

$2-$ In Book Class, Write the code for the method get$\_$borrowed$\_$copies

$3-$ In Book Class, Write the code for the method borrow: The method decrements the available$\_$copies by $1$ if it is greater than $0.$ This method should also update the static variable: total$\_$available$\_$books after borrowing one book $[1\mathrm{.}5$ pt$].$

$4-$ In the Main Class

a$.[1$ pt$]$ Create $2$ Book objects as the following:

$\backslash$table$[[$title$,$author,book$\_$copies$],[$Intro to Java,Ahmed Khalid,$10],[$Data Structure,Tom John,$8]]$

b$.[1$ pt$]$ Borrow $2$ books from the first book "Into to Java".

c$.[1$ pt$]$ Print the title, author, book$\_$copies, and available$\_$copies of the first book.

d$.[0\mathrm{.}5$ pt$]$ Print the total$\_$books.