Write a Java program that acomplishes the following tasks:

$1.$ Implement the following options:

Add Books

Borrow Books

Return Books

Exit

$2.$ For "Add Books":

Prompt the user to enter the book title, author, and quantity.

If the book already exists in the library, update the quantity.

If the book is new, add it to the library.

$3.$ For "Borrow Books":

Prompt the user to enter the book title and the number of books to borrow.

Check if the requested number of books is available in the library.

If the books are available, update the quantity and display a success message.

If not, display an error message.

$4.$ For "Return Books":

Prompt the user to enter the book title and the number of books to return.

Check if the books being returned belong to the library system.

If they do$,$ update the quantity and display a success message.

If not, display an error message.

$5.$ Handle invalid input and display appropriate error messages.

$6.$ Implement an exit option to allow the user to exit the program.