Create a class called Book. Book class should have:

$$ Variables: name, author $($type should be Author. You will need to create Author class$),$ ISBN,

price.

$$ Constructor:

o constructor which takes $4$ parameters: name, author, ISBN, and price

$$ Methods:

o setters and getters

o toString

o equals

Author Class:

You will also need to create an Author class which contains first name, last name and birthday.

$$ Design your own constructor$/$s and method$/$s

$$ Birthday should be Java predefined LocalDate type.