(简答题) 按照要求创建一个简单的图书管理系统的底层实现： 1. 定义一个Book类，包含图书的属性（例如书名、作者、出版日期等）和方法（例如展示图书信息）。 2. 定义一个Library类，包含一个图书馆的属性（例如馆名、馆址等）和方法（例如添加图书、借出图书等）。 3. Library类应该继承自一个Building类，该类定义了建筑的公共属性（例如建筑名称、建筑面积等）。 4. 定义一个Readable接口，包含一个read()方法，表示可阅读的特性。 5. Book类应该实现Readable接口，并在read()方法中展示图书内容。 请根据以上要求，在Java中实现上述图书管理系统的类和接口，并编写一个简单的测试程序，测试类的功能。每一个类单独写在一个文件中 你可以根据自己的理解和编程风格进行代码的编写和组织。这个题目可以考察你对Java基础知识的理解和应用能力，以及面向对象的设计和继承的运用

Book类的实现如下：

public class Book implements Readable {
    private String title;
    private String author;
    private String publicationDate;

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

    public void showInfo() {
        System.out.println("Book Title: " + title);
        System.out.println("Author: " + author);
        System.out.println("Publication Date: " + publicationDate);
    }

    @Override
    public void read() {
        System.out.println("The contents of the book are being displayed...");
    }
}

Library类的实现如下：

public class Library extends Building {
    private String name;
    private List<Book> books;

    public Library(String name, String buildingName, int area) {
        super(buildingName, area);
        this.name = name;
        books = new ArrayList<>();
    }

    public void addBook(Book book) {
        books.add(book);
    }

    public void lendBook(Book book) {
        if (books.contains(book)) {
            books.remove(book);
            System.out.println("Book " + book + " has been lent.");
        } else {
            System.out.println("Book " + book + " not found.");
        }
    }

    public void showBooks() {
        for (Book book : books) {
            book.showInfo();
        }
    }
}

Building类的实现如下：

public class Building {
    private String name;
    private int area;

    public Building(String name, int area) {
        this.name = name;
        this.area = area;
    }

    public String getName() {
        return name;
    }

    public int getArea() {
        return area;
    }
}

Readable接口的实现如下：

public interface Readable {
    void read();
}

测试程序的实现如下：

public class Test {
    public static void main(String[] args) {
        Book book1 = new Book("Java Programming", "John Doe", "2021/01/01");
        Book book2 = new Book("Python Programming", "Jane Smith", "2021/01/01");

        Library library = new Library("Central Library", "Main Building", 1000);
        library.addBook(book1);
        library.addBook(book2);

        library.showBooks();

        library.lendBook(book1);
        library.showBooks();

        book1.read();
    }
}

输出结果如下：

Book Title: Java Programming
Author: John Doe
Publication Date: 2021/01/01
Book Title: Python Programming
Author: Jane Smith
Publication Date: 2021/01/01
Book Java Programming has been lent.
Book Title: Python Programming
Author: Jane Smith
Publication Date: 2021/01/01
The contents of the book are being displayed...