Book object: A Book object represents an instance of a book in programming. It contains attributes and methods that define the properties and behaviors of a book.
myBook: In this context, myBook refers to a specific instance or variable name assigned to a Book object. It allows you to refer to and manipulate that particular book throughout your code.
method: A method is a block of code that performs a specific task or action on an object. In this case, the setAuthor method is used to modify the author information for a Book object.