用JAVA写一个无界面的简单图书管理系统

好的，我可以为您提供一个简单的图书管理系统的JAVA代码，如下：

import java.io.*;
import java.util.*;

class Book implements Serializable {
    String bookName;
    String author;
    String publisher;
    int year;
    double price;

    public Book(String bookName, String author, String publisher, int year, double price) {
        this.bookName = bookName;
        this.author = author;
        this.publisher = publisher;
        this.year = year;
        this.price = price;
    }

    public String toString() {
        return bookName + " " + author + " " + publisher + " " + year + " " + price;
    }
}

public class BookManagementSystem {
    static List<Book> bookList = new ArrayList<>();

    public static void main(String[] args) {
        loadData();
        Scanner scanner = new Scanner(System.in);
        while (true) {
            System.out.println("请选择操作：\n1.添加图书\n2.删除图书\n3.修改图书\n4.查找图书\n5.退出");
            int choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    addBook(scanner);
                    break;
                case 2:
                    deleteBook(scanner);
                    break;
                case 3:
                    updateBook(scanner);
                    break;
                case 4:
                    searchBook(scanner);
                    break;
                case 5:
                    saveData();
                    System.exit(0);
                default:
                    System.out.println("输入有误，请重新输入！");
            }
        }
    }

    private static void loadData() {
        try {
            FileInputStream fileInputStream = new FileInputStream("book.dat");
            ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream);
            bookList = (List<Book>) objectInputStream.readObject();
            objectInputStream.close();
            fileInputStream.close();
        } catch (FileNotFoundException e) {
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }

    private static void saveData() {
        try {
            FileOutputStream fileOutputStream = new FileOutputStream("book.dat");
            ObjectOutputStream objectOutputStream = new ObjectOutputStream(fileOutputStream);
            objectOutputStream.writeObject(bookList);
            objectOutputStream.flush();
            objectOutputStream.close();
            fileOutputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static void addBook(Scanner scanner) {
        System.out.print("请输入书名：");
        String bookName = scanner.next();
        System.out.print("请输入作者：");
        String author = scanner.next();
        System.out.print("请输入出版社：");
        String publisher = scanner.next();
        System.out.print("请输入出版年份：");
        int year = scanner.nextInt();
        System.out.print("请输入价格：");
        double price = scanner.nextDouble();
        Book book = new Book(bookName, author, publisher, year, price);
        bookList.add(book);
        System.out.println("添加成功！");
    }

    private static void deleteBook(Scanner scanner) {
        System.out.print("请输入要删除的书名：");
        String bookName = scanner.next();
        Iterator<Book> iterator = bookList.iterator();
        while (iterator.hasNext()) {
            Book book = iterator.next();
            if (book.bookName.equals(bookName)) {
                iterator.remove();
                System.out.println("删除成功！");
                return;
            }
        }
        System.out.println("没有找到该书！");
    }

    private static void updateBook(Scanner scanner) {
        System.out.print("请输入要修改的书名：");
        String bookName = scanner.next();
        Iterator<Book> iterator = bookList.iterator();
        while (iterator.hasNext()) {
            Book book = iterator.next();
            if (book.bookName.equals(bookName)) {
                System.out.print("请输入新的作者（如不修改请输入原作者）：");
                String author = scanner.next();
                System.out.print("请输入新的出版社（如不修改请输入原出版社）：");
                String publisher = scanner.next();
                System.out.print("请输入新的出版年份（如不修改请输入原出版年份）：");
                int year = scanner.nextInt();
                System.out.print("请输入新的价格（如不修改请输入原价格）：");
                double price = scanner.nextDouble();
                if (!author.equals(book.author)) {
                    book.author = author;
                }
                if (!publisher.equals(book.publisher)) {
                    book.publisher = publisher;
                }
                if (year != book.year) {
                    book.year = year;
                }
                if (price != book.price) {
                    book.price = price;
                }
                System.out.println("修改成功！");
                return;
            }
        }
        System.out.println("没有找到该书！");
    }

    private static void searchBook(Scanner scanner) {
        System.out.print("请输入要查找的书名：");
        String bookName = scanner.next();
        Iterator<Book> iterator = bookList.iterator();
        while (iterator.hasNext()) {
            Book book = iterator.next();
            if (book.bookName.equals(bookName)) {
                System.out.println(book);
                return;
            }
        }
        System.out.println("没有找到该书！");
    }
}

这段代码实现了一个简单的图书管理系统，可以进行添加、删除、修改、查找、退出等操作。您可以根据需要进行修改和扩展。