java写图书管理系统

以下是一个简单的Java图书管理系统的实现，包括添加图书、删除图书、查找图书和显示所有图书的功能：

import java.util.ArrayList;
import java.util.Scanner;

public class BookManagementSystem {
    private ArrayList<Book> bookList = new ArrayList<Book>();
    private Scanner scanner = new Scanner(System.in);

    public void addBook() {
        System.out.println("请输入图书名称：");
        String name = scanner.nextLine();
        System.out.println("请输入图书作者：");
        String author = scanner.nextLine();
        System.out.println("请输入图书价格：");
        double price = scanner.nextDouble();
        scanner.nextLine();
        Book book = new Book(name, author, price);
        bookList.add(book);        System.out.println("添加成功！");
    }

    public void deleteBook() {
        System.out.println("请输入要删除的图书名称：");
        String name = scanner.nextLine();
        for (int i = 0; i < bookList.size(); i++) {
            Book book = bookList.get(i);
            if (book.getName().equals(name)) {
                bookList.remove(i);
                System.out.println("删除成功！");
                return;
            }
        }
        System.out.println("未找到该图书！");
    }

    public void findBook() {
        System.out.println("请输入要查找的图书名称：");
        String name = scanner.nextLine();
        for (int i = 0; i < bookList.size(); i++) {
            Book book = bookList.get(i);
            if (book.getName().equals(name)) {
                System.out.println("图书信息如下：");
                System.out.println(book);
                return;
            }
        }
        System.out.println("未找到该图书！");
    }

    public void displayAllBooks() {
        System.out.println("所有图书信息如下：");
        for (int i = 0; i < bookList.size(); i++) {
            Book book = bookList.get(i);
            System.out.println(book);
        }
    }

    public void start() {
        while (true) {
            System.out.println("欢迎使用图书管理系统，请输入操作编号：");
            System.out.println("1.添加图书");
            System.out.println("2.删除图书");
            System.out.println("3.查找图书");
            System.out.println("4.显示所有图书");
            System.out.println("5.退出系统");
            int choice = scanner.nextInt();
            scanner.nextLine();
            switch (choice) {
                case 1:
                    addBook();
                    break;
                case 2:
                    deleteBook();
                    break;
                case 3:
                    findBook();
                    break;
                case 4:
                    displayAllBooks();
                    break;
                case 5:
                    System.out.println("感谢使用图书管理系统，再见！");
                    return;
                default:
                    System.out.println("输入有误，请重新输入！");
                    break;
            }
        }
    }

    public static void main(String[] args) {
        BookManagementSystem system = new BookManagementSystem();
        system.start();
    }
}

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

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

    public String getName() {
        return name;
    }

    public String getAuthor() {
        return author;
    }

    public double getPrice() {
        return price;
    }

    public String toString() {
        return "书名：" + name + "，作者：" + author + "，价格：" + price;
    }
}