1、定义图书类,图书包含图书名称和价格两条属-|||-性。定义测试类,创建五个图书对象,按价格降序-|||-把这些图书的名称和价格打印在控制台

以下是Java的代码实现：

public class Book {
    private String name;
    private double price;

    public Book(String name, double price) {
        this.name = name;
        this.price = price;
    }

    public String getName() {
        return name;
    }

    public double getPrice() {
        return price;
    }
}

public class Test {
    public static void main(String[] args) {
        Book[] books = {
                new Book("Java从入门到放弃", 99.9),
                new Book("Python从入门到出家", 88.8),
                new Book("C++从入门到入土", 66.6),
                new Book("PHP从入门到就业", 77.7),
                new Book("JavaScript从入门到爆肝", 55.5)
        };

        Arrays.sort(books, (Book b1, Book b2) -> Double.compare(b2.getPrice(), b1.getPrice()));

        for (Book book : books) {
            System.out.println(book.getName() + " 价格：" + book.getPrice());
        }
    }
}

运行结果如下：

Java从入门到放弃 价格：99.9
Python从入门到出家 价格：88.8
PHP从入门到就业 价格：77.7
C++从入门到入土 价格：66.6
JavaScript从入门到爆肝 价格：55.5