package unl.cse.library;

import java.io.File;

import java.io.FileNotFoundException;

import java.util.List;

import java.util.Scanner;

public class LibraryDemo {

private final Library lib;

public LibraryDemo() {

this.lib = new Library();

loadFile();

}

private void loadFile() {

Scanner s = null;

try {

s = new Scanner(new File("data/books.txt"));

} catch (FileNotFoundException e) {

e.printStackTrace();

}

while(s.hasNext()) {

String line = s.nextLine();

String tokens[] = line.split(",");

String title = tokens[0];

String auth[] = tokens[1].split(" ");

Author author = new Author();

author.firstName = auth[0];

author.lastName = auth[1];

String isbn = tokens[2];

String publishDate = tokens[3];

Book b = new Book();

b.setTitle(title);

b.setAuthor(author);

b.setISBN(isbn);

b.setPublishDate(publishDate);

lib.addBook(b);

}

}

/**

* Method that searches for a book.

*/

private void searchBookInterface() {

System.out.println("Please enter a Search Option: (1) Search By Title (2) Search By Author (3) Keyword Search");

Scanner scanner = new Scanner(System.in);

int userChoice = scanner.nextInt();

System.out.print("Enter your search term: ");

String query = scanner.next();

switch (userChoice) {

case 1:

printBooks(this.lib.titleSearch(query));

break;

case 2:

printBooks(this.lib.authorSearch(query));

break;

case 3:

printBooks(this.lib.keywordSearch(query));

break;

default:

break;

}

return;

}

private void printBooks(List books) {

System.out.print(" ");

System.out.println(String.format("%-50s %-20s %-15s", "TITLE", "AUTHOR", "ISBN"));

for (Book b : books) {

String formattedAuthor = null;

if(b.getAuthor() != null)

formattedAuthor = b.getAuthor().lastName + ", " + b.getAuthor().lastName;

String line = String.format("%-50s %-20s %-15s", b.getTitle(), formattedAuthor, b.getISBN());

System.out.println(line);

}

System.out.print(" ");

}

/**

* Method that adds a book.

*/

private void addBookInterface() {

//change this function

Scanner scanner = new Scanner(System.in);

System.out.println("Please enter the details of the book you want to add to the library");

System.out.println("Enter the title of the book: ");

String title = scanner.nextLine();

System.out.println("Enter the first name of the author: ");

String firstName = scanner.nextLine();

System.out.println("Enter the last name of the author: ");

String lastName = scanner.nextLine();

System.out.println("Enter the ISBN of the book: ");

String isbn = scanner.nextLine();

System.out.println("Enter the publication date (YYYY-MM-DD)");

String publishDate = scanner.nextLine();

Author author = new Author();

author.firstName = firstName;

author.lastName = lastName;

Book b = new Book();

b.setTitle(title);

b.setAuthor(author);

b.setISBN(isbn);

b.setPublishDate(publishDate);

this.lib.addBook(b);

return;

}

/**

* Method that acts as the interface to the library software.

*/

public void libraryInterface() {

int userChoice = 0;

while (userChoice != 4) {

System.out.println("Welcome to the Arcadia Library.");

System.out.print("Please enter a choice: (1) Add a book, (2) Find a book, (3) Print Collection (4) Exit:");

Scanner scanner = new Scanner(System.in);

userChoice = scanner.nextInt();

switch (userChoice) {

case 1:

this.addBookInterface();

break;

case 2:

this.searchBookInterface();

break;

case 3:

printBooks(this.lib.getCollection());

break;

default:

break;

}

}//end of while

System.out.println("Thank You for Using Arcadia Library !");

return;

}

/**

* Main method

* @param args the command line arguments

*/

public static void main(String[] args) {

LibraryDemo demo = new LibraryDemo();

demo.libraryInterface();

}

}

package unl.cse.library;

import org.joda.time.DateTime;

public class Book {

private String title;

private String isbn;

private Author author;

private DateTime publishDate;

/**

* Getter method for author

* @return

*/

public Author getAuthor() {

return null;

}

/**

* Setter method for authors

* @param author

*/

public void setAuthor(Author author) {

this.author = author;

}

/**

* Getter method for call number.

* @return

*/

public String getISBN() {

return null;

}

/**

* Setter method for call number.

* @param callNumber

*/

public void setISBN(String isbn) {

this.isbn = isbn;

}

/**

* Getter method for title

* @return

*/

public String getTitle() {

return null;

}

/**

* Setter method for title

* @param title

*/

public void setTitle(String title) {

this.title = title;

}

public String getPublishDate() {

return this.publishDate.toString("YYYY");

}

public void setPublishDate(String date) {

this.publishDate = DateTime.parse(date);

}

}

Activity 1: Constructors Instructions Run the library program to familiarize yourself with its functionality. Note that printing the collection is not fully operational Complete each of the accessor (getter) methods in the Book class; Good Practice Tip: always use this keyword to disambiguate the scope of variables and prevent potential problems when subclassing Observe that the Book class does not have a constructor defined. Examine the addBook code and determine how it is possible to create instances of the Book class without a constructor. 1. 2. 3. Lab Handout: Classes, Visibility, & Constructors Modify the Book class by adding and implementing the following constructor: public Book (String title, Author author, String isbn, String publishDate) ( > Adding this constructor will cause syntax errors in other parts of the program. Think about why and then fix these problems by modifying the code appropriately. 4. 5