java基于控制台的购书系统代码

创建一个简单的基于控制台的购书系统代码通常涉及用户界面交互、书籍管理以及购买操作。这里是一个基本的伪代码示例，展示了如何设计这样的系统：

import java.util.Scanner;

class Book {
    String title;
    double price;

    // 构造函数，getters和setters省略
}

class ShoppingCart {
    private List<Book> items = new ArrayList<>();

    void addItem(Book book) {
        items.add(book);
    }

    void removeItem(Book book) {
        items.remove(book);
    }

    double getTotalCost() {
        return items.stream().mapToDouble(Book::price).sum();
    }
}

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

        Book book1 = new Book("《Java核心技术》", 50.0);
        Book book2 = new Book("《算法导论》", 80.0);

        ShoppingCart cart = new ShoppingCart();

        System.out.println("欢迎来到购书系统!");
        while (true) {
            System.out.println("请选择操作：1.添加书籍 2.删除书籍 3.查看购物车 4.结账");
            int choice = scanner.nextInt();

            switch (choice) {
                case 1:
                    System.out.print("请输入书籍标题：");
                    String title = scanner.next();
                    System.out.print("请输入价格：");
                    double price = scanner.nextDouble();
                    Book selectedBook = new Book(title, price);
                    cart.addItem(selectedBook);
                    break;
                // ...其他case处理...
                case 4:
                    if (cart.getTotalCost() > 0) {
                        System.out.printf("总价：%.2f元\n", cart.getTotalCost());
                        // 结账过程（比如清空购物车）
                        cart.getItems().clear();
                    } else {
                        System.out.println("购物车为空");
                    }
                    break;
                default:
                    System.out.println("无效选择，请重试");
                    break;
            }
        }
    }
}