This exercise creates a virtual library and then populates and searches for books within it.
My Code
Main
import java.util.ArrayList;
public class Main {
public static void main(String[] args) {
// test your program here
Library Library = new Library();
Library.addBook(new Book("Cheese Problems Solved", "Woodhead Publishing", 2007));
Library.addBook(new Book("The Stinky Cheese Man and Other Fairly Stupid Tales", "Penguin Group", 1992));
Library.addBook(new Book("NHL Hockey", "Stanley Kupp", 1952));
Library.addBook(new Book("Battle Axes", "Tom A. Hawk", 1851));
for (Book book : Library.searchByTitle("CHEESE")) {
System.out.println(book);
}
System.out.println("---");
for (Book book : Library.searchByPublisher("PENGUIN ")) {
System.out.println(book);
}
}
}Book
public class Book {
private String title;
private String publisher;
private int year;
public Book(String title, String publisher, int year) {
this.title = title;
this.publisher = publisher;
this.year = year;
}
public String title(){
return this.title;
}
public String publisher(){
return this.publisher;
}
public int year(){
return this.year;
}
public String toString(){
return this.title +", "+ this.publisher +", "+ this.year;
}
}
Library
import java.util.ArrayList;
import java.util.Collections;
public class Library {
private ArrayList<Book> book = new ArrayList<Book>();
public Library() {
}
public void addBook(Book newBook) {
this.book.add(newBook);
}
public void printBooks() {
for (Book books : book) {
System.out.println(books);
}
}
public ArrayList<Book> searchByTitle(String title) {
ArrayList<Book> found = new ArrayList<Book>();
for (Book books: book) {
if (StringUtils.included(books.title(), title)){
found.add(books);
}
}
return found;
}
public ArrayList<Book> searchByPublisher(String publisher) {
ArrayList<Book> found = new ArrayList<Book>();
for (Book books : book) {
if (StringUtils.included(books.publisher(), publisher)) {
found.add(books);
}
}
return found;
}
public ArrayList<Book> searchByYear(int year) {
ArrayList<Book> found = new ArrayList<Book>();
for (Book books : book) {
if (books.year() == year) {
found.add(books);
}
}
return found;
}
}
StringUtils
public class StringUtils {
public static boolean included(String word, String searched) {
word = word.toUpperCase();
word = word.trim();
searched = searched.toUpperCase();
searched = searched.trim();
if (word.length() > 0 && searched.length() > 0) {
if (word.contains(searched)) {
return true;
}
}
return false;
}
}Model Code
Main
import java.util.ArrayList;
public class Main {
public static void main(String[] args) {
// test your program here
Library Library = new Library();
Library.addBook(new Book("Cheese Problems Solved", "Woodhead Publishing", 2007));
Library.addBook(new Book("The Stinky Cheese Man and Other Fairly Stupid Tales", "Penguin Group", 1992));
Library.addBook(new Book("NHL Hockey", "Stanley Kupp", 1952));
Library.addBook(new Book("Battle Axes", "Tom A. Hawk", 1851));
for (Book book : Library.searchByTitle("CHEESE")) {
System.out.println(book);
}
System.out.println("---");
for (Book book : Library.searchByPublisher("PENGUIN ")) {
System.out.println(book);
}
}
}Book
public class Book {
private String title;
private String publisher;
private int year;
public Book(String title, String publisher, int year) {
this.title = title;
this.publisher = publisher;
this.year = year;
}
public String title() {
return title;
}
public String publisher() {
return publisher;
}
public int year() {
return year;
}
@Override
public String toString() {
return this.title + ", " + this.publisher + ", " + this.year;
}
}
Library
import java.util.ArrayList;
public class Library {
private ArrayList<Book> books;
public Library() {
this.books = new ArrayList<Book>();
}
public void addBook(Book book) {
this.books.add(book);
}
public void printBooks() {
for (Book book : this.books) {
System.out.println(book);
}
}
public ArrayList<Book> searchByTitle(String title) {
return searchBook(title, null, -1);
}
public ArrayList<Book> searchByPublisher(String publisher) {
return searchBook(null, publisher, -1);
}
public ArrayList<Book> searchByYear(int year) {
return searchBook(null, null, year);
}
// Helper method
public ArrayList<Book> searchBook(String title, String bookName, int year) {
ArrayList<Book> found = new ArrayList<Book>();
for (Book book : this.books) {
if (StringUtils.included(book.title(), title)
|| StringUtils.included(book.publisher(), bookName)
|| book.year() == year) {
found.add(book);
}
}
return found;
}
}
StringUtils
public class StringUtils {
public static boolean included(String word, String searched) {
if (word == null || searched == null) {
return false;
}
word = word.trim();
searched = searched.trim();
word = word.toUpperCase();
searched = searched.toUpperCase();
return word.contains(searched);
}
}Comments
Not to bad. The largest difference is in the class of StringUtils and although the model version is better, mine doesn’t look all that bad.