Write Book. java program:
The Book constructor will be used to initialize all attributes of the Book object. The initial status of the book should be AVAILABLE, and the patron and due date should be null.
Like the constructor, the checkin method should set the book's status to AVAILABLE and assign null to both patron and due date.
The checkout method should make the book UNAVAILABLE and save the given patron and due date in the object.
The equals method checks whether two books have the same isbn. If the given object is a Book, compare this. isbn with the other book's isbn. If the given object is a String, compare this. isbn with the string.
In the UML diagram, getX is actually eight methods:
one accessor method for each of the eight attributes. These should be easy to implement (Eclipse will generate them automatically). Note that the class should have no "setX" methods.
The toString method should return a String representation of the book. If a book is initialized with the following parameters ("aaa", "bbb", "1234", 2013, 10), it should return a String exactly as follows: "Title: aaa, Author: bbb, ISBN: 1234, Year: 2013, Pages: 10."



Junit code for testing:

import junit. framework. TestCase;
import java. util. Date;
/**
* Tests Book: currently one test method.
*
* @author
* @version
*
*/

public class BookTest extends TestCase {
/** A single test for book. **/
public void testBook() {

String title = "Starting Out With Java";
String author = "Tony Gaddis";
String isbn = "978-0-13-395705-1";
int year = 2016;
int pages = 1188;

//Test constructor and getters

Book book1 = new Book(title, author, isbn, year, pages);
assertEquals("Book: getTitle check ", book1.getTitle(), title);
assertEquals("Book: getAuthor check ", book1.getAuthor(), author);
assertEquals("Book: getIsbn check ", book1.getIsbn(),
isbn);
assertEquals("Book: getYear check ", book1.getYear(),
year);
assertEquals("Book: getPages check ", book1.getPages(),
pages);
assertEquals("Book: getStatus check ", book1.getStatus(),
book1.AVAILABLE);
assertEquals("Book: getDue ", book1.getDue(), null);
assertEquals("Book: getPatron ", book1.getPatron(), null);

String title2 = "Starting Out With Java Edition 4";
String author2 = "T. Gaddis";
String isbn2 = "978-0-13-608020-6";
int year2 = 2008;
int pages2 = 977;

// Test equals

Book book2 = new Book(title2, author2, isbn2, year2, pages2);
Book book3 = new Book(title, author, isbn, year, pages);
assertFalse("Book: book1 != book2", book1.equals(book2));
assertTrue("Book: book1 == book3", book1.equals(book3));
assertFalse("Book: string not equal test",
book1.equals(book2.getIsbn()));
assertTrue("Book: string equal test", book1.equals(book3.getIsbn()));

// Test toString

assertEquals("Book: toString", book1.toString(),
"Title: Starting Out With Java, Author: Tony Gaddis, "
+ "ISBN: 978-0-13-395705-1, Year: 2016, Pages: 1188.");

// Test checkout

Patron aPatron = new Patron("Dee A. B. Weikle", "[email protected]",
2, 1.50);
Patron ePatron = new Patron("Dee A. B. Weikle", "[email protected]",
2, 1.50);
Date dueDate = new Date();
book1.checkout(ePatron, dueDate);
assertTrue("Book: checkout", ePatron. equals(book1.getPatron()));
assertEquals("Book: checkout date", book1.getDue(), dueDate);
assertEquals("Book: checkout status", book1.getStatus(),
book1.UNAVAILABLE);

// Test checkin

book1.checkin();
assertEquals("Book: checkin", book1.getPatron(), null);
assertEquals("Book: checkout date", book1.getDue(), null);
assertEquals("Book: checkout status", book1.getStatus(),
book1.AVAILABLE);
}
}