/* +---------------+ | Book | +-------------+ +---------------+ +-->| Author | | String title | | +-------------+ | Author author |- + | String name | | int price | | int dob | | int year | +-------------+ +---------------+ */ // to represent an author of a book class Author { String name; int dob; Author(String name, int dob) { this.name = name; this.dob = dob; } } // to represent a book with author class Book { String title; Author author; int price; int year; Book(String title, Author author, int price, int year) { this.title = title; this.author = author; this.price = price; this.year = year; } } /* Interactions: Examples of the use of the constructor for the class Author Author mf = new Author("Matthias",1900); Author pc = new Author("Pat Conroy", 1940); Examples of the use of the constructor for the class Book - version 2 Book b1 = new Book("HtDP", mf, 60, 2001); Book b2 = new Book("Beach Music", pc, 20, 1996); Examples of the use of the selectors in the class Book - version 2 b1.title -- expected: "HtDP" b1.author -- expected: new Author("Matthias",1900) b1.author.name -- expected: "Matthias" b1.author.dob -- expected: 1900 b1.price -- expected: 60 b1.year -- expected: 2001 b2.title -- expected: "Beach Music" b2.author -- expected: new Author("Pat Conroy", 1940) b2.author.name -- expected: "Pat Conroy" b2.author.dob -- expected: 1940 b2.price -- expected: 20 b2.year -- expected: 1996 */