j-test

private String id;
private String name;
private int pageCount;
private String authorId;
private Author author;
// Constructor
public Book(String id, String name, int pageCount, String authorId) {
 this.id = id;
 this.name = name;
 this.pageCount = pageCount;
 this.authorId = authorId;
 this.author = null; // Initialize author to null
}
// Getters and setters
public String getId() {
 return id;
}
public void setId(String id) {
 this.id = id;
}
public String getName() {
 return name;
}
public void setName(String name) {
 this.name = name;
}
public int getPageCount() {
 return pageCount;
}
public void setPageCount(int pageCount) {
 this.pageCount = pageCount;
}
public String getAuthorId() {
 return authorId;
}
public void setAuthorId(String authorId) {
 this.authorId = authorId;
}
public Author getAuthor() {
 return author;
}
public void setAuthor(Author author) {
 this.author = author;
}
// Sample author data (replace with your actual author data retrieval logic)
public static Map<String, Author> authors = new HashMap<>();
public static void initializeAuthors() {
 authors.put("author-1", new Author("author-1", "J.K. Rowling"));
 authors.put("author-2", new Author("author-2", "Herman Melville"));
 authors.put("author-3", new Author("author-3", "Anne Rice"));
}
public static Book getById(String id) {
 Book book = null;
 for (Book b : getAllBooks()) {
 if (b.getId().equals(id)) {
 book = b;
 break;
 }
 }
 return book;
}
public static List<Book> getAllBooks() {
 // Replace with your actual logic to retrieve all books from your data source
 List<Book> books = new ArrayList<>();
 // ... Logic to populate the list with books from your data source
 return books;
}

public Author(String id, String name) {
 this.id = id;
 this.name = name;
}
// Getters and setters (similar to Book class)
public String getId() {
 return id;
}
public void setId(String id) {
 this.id = id;
}
public String getName() {
 return name;
}
public void setName(String name) {
 this.name = name;
}