编写java代码实现类图书目书本一对n

要实现类图书目书本一对n的关系，可以使用Java中的面向对象编程来实现。以下是一种可能的实现方式：

首先，我们需要定义两个类：Book和Library。

Book类表示一本书，它包含书的属性，如书名、作者、出版社等。同时，Book类还需要一个方法来获取书的信息。

public class Book {
    private String title;
    private String author;
    private String publisher;

    public Book(String title, String author, String publisher) {
        this.title = title;
        this.author = author;
        this.publisher = publisher;
    }

    public String getTitle() {
        return title;
    }

    public String getAuthor() {
        return author;
    }

    public String getPublisher() {
        return publisher;
    }

    public String getInfo() {
        return "Title: " + title + ", Author: " + author + ", Publisher: " + publisher;
    }
}

Library类表示图书馆，它包含一个Book类型的数组来存储图书馆中的书籍。同时，Library类还需要一些方法来管理图书馆中的书籍，如添加书籍、删除书籍等。

public class Library {
    private Book[] books;
    private int count;

    public Library(int capacity) {
        books = new Book[capacity];
        count = 0;
    }

    public void addBook(Book book) {
        if (count < books.length) {
            books[count] = book;
            count++;
            System.out.println("Book added successfully.");
        } else {
            System.out.println("Library is full. Cannot add more books.");
        }
    }

    public void removeBook(Book book) {
        boolean found = false;
        for (int i = 0; i < count; i++) {
            if (books[i].equals(book)) {
                found = true;
                for (int j = i; j < count - 1; j++) {
                    books[j] = books[j + 1];
                }
                count--;
                System.out.println("Book removed successfully.");
                break;
            }
        }
        if (!found) {
            System.out.println("Book not found in the library.");
        }
    }

    public void displayBooks() {
        if (count == 0) {
            System.out.println("Library is empty.");
        } else {
            System.out.println("Books in the library:");
            for (int i = 0; i < count; i++) {
                System.out.println(books[i].getInfo());
            }
        }
    }
}

现在，我们可以创建Book对象并将其添加到Library中：

public class Main {
    public static void main(String[] args) {
        Book book1 = new Book("Java Programming", "John Smith", "ABC Publisher");
        Book book2 = new Book("Python Basics", "Jane Doe", "XYZ Publisher");

        Library library = new Library(10);
        library.addBook(book1);
        library.addBook(book2);

        library.displayBooks();
    }
}

这样，我们就实现了类图书目书本一对n的关系。通过Library类，我们可以管理多本书籍，并进行添加、删除和展示等操作。