用java写一个餐饮信息管理系统

好的，我可以为您提供一个基本的餐饮信息管理系统的Java代码框架，具体功能包括添加、删除、修改和查找餐厅信息、餐厅菜单和订单信息等。以下是代码框架：

import java.util.*;

public class Restaurant {
    private String name;
    private String address;
    private String phone;
    private Map<String, Double> menu; // 餐厅菜单

    public Restaurant(String name, String address, String phone) {
        this.name = name;
        this.address = address;
        this.phone = phone;
        menu = new HashMap<>();
    }

    // 添加菜品到菜单
    public void addDish(String dishName, double price) {
        menu.put(dishName, price);
    }

    // 删除菜品
    public void removeDish(String dishName) {
        menu.remove(dishName);
    }

    // 修改菜品价格
    public void modifyPrice(String dishName, double newPrice) {
        menu.replace(dishName, newPrice);
    }

    // 搜索菜品
    public Double searchDish(String dishName) {
        return menu.get(dishName);
    }

    // 输出菜单
    public void printMenu() {
        System.out.println("菜单：");
        for (String dishName : menu.keySet()) {
            System.out.println(dishName + "\t" + menu.get(dishName));
        }
    }
}

public class Order {
    private Restaurant restaurant;
    private List<String> dishes; // 订单菜单

    public Order(Restaurant restaurant) {
        this.restaurant = restaurant;
        dishes = new ArrayList<>();
    }

    // 添加菜品到订单
    public void addDish(String dishName) {
        dishes.add(dishName);
    }

    // 删除订单中的菜品
    public void removeDish(String dishName) {
        dishes.remove(dishName);
    }

    // 计算订单价格
    public double calculatePrice() {
        double totalPrice = 0;
        for (String dishName : dishes) {
            Double price = restaurant.searchDish(dishName);
            if (price != null) {
                totalPrice += price;
            }
        }
        return totalPrice;
    }

    // 输出订单详情
    public void printOrder() {
        System.out.println("订单详情：");
        for (String dishName : dishes) {
            System.out.println(dishName + "\t" + restaurant.searchDish(dishName));
        }
        System.out.println("总价：" + calculatePrice());
    }
}

public class RestaurantManagementSystem {
    private List<Restaurant> restaurants; // 餐厅列表

    public RestaurantManagementSystem() {
        restaurants = new ArrayList<>();
    }

    // 添加餐厅
    public void addRestaurant(Restaurant restaurant) {
        restaurants.add(restaurant);
    }

    // 删除餐厅
    public void removeRestaurant(Restaurant restaurant) {
        restaurants.remove(restaurant);
    }

    // 搜索餐厅
    public Restaurant searchRestaurant(String restaurantName) {
        for (Restaurant restaurant : restaurants) {
            if (restaurant.getName().equals(restaurantName)) {
                return restaurant;
            }
        }
        return null;
    }

    // 输出所有餐厅信息
    public void printRestaurants() {
        System.out.println("餐厅列表：");
        for (Restaurant restaurant : restaurants) {
            System.out.println(restaurant.getName() + "\t" + restaurant.getAddress() + "\t" + restaurant.getPhone());
        }
    }

    public static void main(String[] args) {
        // 初始化餐厅信息
        Restaurant restaurant1 = new Restaurant("餐厅1", "地址1", "电话1");
        restaurant1.addDish("菜品1", 10.0);
        restaurant1.addDish("菜品2", 20.0);

        Restaurant restaurant2 = new Restaurant("餐厅2", "地址2", "电话2");
        restaurant2.addDish("菜品3", 30.0);
        restaurant2.addDish("菜品4", 40.0);

        // 初始化订单信息
        Order order1 = new Order(restaurant1);
        order1.addDish("菜品1");
        order1.addDish("菜品2");

        Order order2 = new Order(restaurant2);
        order2.addDish("菜品3");
        order2.addDish("菜品4");

        // 输出餐厅和订单信息
        RestaurantManagementSystem rm = new RestaurantManagementSystem();
        rm.addRestaurant(restaurant1);
        rm.addRestaurant(restaurant2);
        rm.printRestaurants();

        System.out.println();

        order1.printOrder();
        order2.printOrder();
    }
}

该代码框架实现了基本的餐饮信息管理系统，您可以根据自己的需求进行修改和扩展。需要注意的是，该代码框架仅为参考，实际应用中还需要考虑更多的情况和细节。