Java程序设计给定n本书的名称和定价，本题要求编写程序，查找并输出其中定价最高和最低的书的名称和定价。

您好，对于这个问题，您可以先定义一个Book类，包含书名和定价两个属性。然后再创建一个BookStore类，包含一个Book类型的数组，存储书籍信息。接下来，遍历数组，比较每一本书的价格，找到最高和最低的价格，并记录对应的书名。最后输出即可。

以下是Java代码示例：

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;
    }
}

class BookStore {
    private Book[] books;

    public BookStore(Book[] books) {
        this.books = books;
    }

    public void findMaxAndMinPrice() {
        double maxPrice = Double.MIN_VALUE;
        double minPrice = Double.MAX_VALUE;
        String maxName = "";
        String minName = "";

        for (Book book : books) {
            if (book.getPrice() > maxPrice) {
                maxPrice = book.getPrice();
                maxName = book.getName();
            }
            if (book.getPrice() < minPrice) {
                minPrice = book.getPrice();
                minName = book.getName();
            }
        }

        System.out.println("最高价书籍名称：" + maxName + "，价格：" + maxPrice);
        System.out.println("最低价书籍名称：" + minName + "，价格：" + minPrice);
    }
}

public class Main {
    public static void main(String[] args) {
        Book[] books = new Book;
        books = new Book("Java编程思想", 89.8);
        books = new Book("Java核心技术", 78.5);
        books = new Book("Java从入门到精通", 68.9);

        BookStore bookStore = new BookStore(books);
        bookStore.findMaxAndMinPrice();
    }
}

希望能够对您有所帮助。