从键盘依次输入10本图书信息（以顺序表存放），分别编写按书号、书名及价格等信息的查找函数，实现图书信息的查找。 说明：图书信息顺序表数据结构定义。 class Book{ public String isbn; public String bname; public String publish; public float price; } class BookManage{ private final int BOOK_MAX = 100; private Book []books; private int size; public BookManage(){ books = new Book[BOOK_MAX]; } public void add(Book book){ books[size] = book; size ++; } public int findBookByIsbn(int index, String isbn){ // 补充代码 ...... } public int findBookByBname(int index, String bname){ // 补充代码 ...... } public int findBookByPrice(int index, float price){ // 补充代码 ...... } } // findBookByIsbn()方法的代码 // findBookByBname()方法的代码 // findBookByPrice()方法的代码 // main()代码，要求输入多本书信息，再依次执行3种查找方法

以下是完整的代码实现：

import java.util.Scanner;

class Book {
    public String isbn;
    public String bname;
    public String publish;
    public float price;
}

class BookManage {
    private final int BOOK_MAX = 100;
    private Book[] books;
    private int size;

    public BookManage() {
        books = new Book[BOOK_MAX];
    }

    public void add(Book book) {
        books[size] = book;
        size++;
    }

    public int findBookByIsbn(int index, String isbn) {
        if (index < 0 || index >= size) {
            return -1;
        }
        if (books[index].isbn.equals(isbn)) {
            return index;
        } else {
            return findBookByIsbn(index + 1, isbn);
        }
    }

    public int findBookByBname(int index, String bname) {
        if (index < 0 || index >= size) {
            return -1;
        }
        if (books[index].bname.equals(bname)) {
            return index;
        } else {
            return findBookByBname(index + 1, bname);
        }
    }

    public int findBookByPrice(int index, float price) {
        if (index < 0 || index >= size) {
            return -1;
        }
        if (books[index].price == price) {
            return index;
        } else {
            return findBookByPrice(index + 1, price);
        }
    }
}

public class Main {
    public static void main(String[] args) {
        BookManage bookManage = new BookManage();
        Scanner scanner = new Scanner(System.in);

        System.out.println("请输入10本书的信息：");
        for (int i = 0; i < 10; i++) {
            Book book = new Book();
            System.out.print("第" + (i + 1) + "本书的书号：");
            book.isbn = scanner.next();
            System.out.print("第" + (i + 1) + "本书的书名：");
            book.bname = scanner.next();
            System.out.print("第" + (i + 1) + "本书的出版社：");
            book.publish = scanner.next();
            System.out.print("第" + (i + 1) + "本书的价格：");
            book.price = scanner.nextFloat();
            bookManage.add(book);
        }

        System.out.print("请输入要查找的书的书号：");
        String isbn = scanner.next();
        int index = bookManage.findBookByIsbn(0, isbn);
        if (index == -1) {
            System.out.println("未找到该书！");
        } else {
            System.out.println("该书的信息如下：");
            System.out.println("书号：" + bookManage.books[index].isbn);
            System.out.println("书名：" + bookManage.books[index].bname);
            System.out.println("出版社：" + bookManage.books[index].publish);
            System.out.println("价格：" + bookManage.books[index].price);
        }

        System.out.print("请输入要查找的书的书名：");
        String bname = scanner.next();
        index = bookManage.findBookByBname(0, bname);
        if (index == -1) {
            System.out.println("未找到该书！");
        } else {
            System.out.println("该书的信息如下：");
            System.out.println("书号：" + bookManage.books[index].isbn);
            System.out.println("书名：" + bookManage.books[index].bname);
            System.out.println("出版社：" + bookManage.books[index].publish);
            System.out.println("价格：" + bookManage.books[index].price);
        }

        System.out.print("请输入要查找的书的价格：");
        float price = scanner.nextFloat();
        index = bookManage.findBookByPrice(0, price);
        if (index == -1) {
            System.out.println("未找到该书！");
        } else {
            System.out.println("该书的信息如下：");
            System.out.println("书号：" + bookManage.books[index].isbn);
            System.out.println("书名：" + bookManage.books[index].bname);
            System.out.println("出版社：" + bookManage.books[index].publish);
            System.out.println("价格：" + bookManage.books[index].price);
        }
    }
}

运行程序后，按照提示输入10本书的信息，然后分别输入要查找的书的书号、书名和价格，程序会输出相应的书籍信息。