Make a package for each of the question:

Create a class whose objects are book collection. A book collection should keep a

String array $($set the size $10)$ of book title and the number of books in the collection.

It also should support the following methods:

a$.$ addBook$($String$)-$ add one book to the collection

i$.$ when the array is full, throw an exception

$($BookCollectionFullException$)$

b$.$ removeBook$()-$ remove one book from the bag based on the given title

i$.$ when the collection is empty, throw an

exception$($BookCollectionEmptyException$)$

c$.$ getBooksCount $-$ return the number of books in the bag

You should create the two exceptions listed above by yourself.

Inside main method, create a book collection object, and test the methods.

Write a program to read the contents from three given files and write them to one

file, and also add line number.