用JAVA程序设计食堂点餐程序的代码

好的，以下是一个简单的用JAVA编写的食堂点餐程序示例：

import java.util.Scanner;

public class CafeteriaOrderSystem {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int option = 0;
        String[] menu = {"炒饭", "炒面", "饺子", "馄饨", "牛肉面", "炒年糕"};
        int[] price = {10, 12, 8, 9, 15, 11};
        int[] count = {0, 0, 0, 0, 0, 0};
        int total = 0;
        
        while (option != 5) {
            System.out.println("欢迎使用食堂点餐系统，请输入对应的数字选择操作：");
            System.out.println("1. 点餐");
            System.out.println("2. 查看订单");
            System.out.println("3. 修改订单");
            System.out.println("4. 删除订单");
            System.out.println("5. 结束点餐");
            option = scanner.nextInt();
            
            switch (option) {
                case 1:
                    System.out.println("菜单如下：");
                    for (int i = 0; i < menu.length; i++) {
                        System.out.println((i+1) + ". " + menu[i] + " " + price[i] + "元");
                    }
                    System.out.println("请输入要点的菜品编号：");
                    int item = scanner.nextInt();
                    System.out.println("请输入要点的数量：");
                    int num = scanner.nextInt();
                    count[item-1] += num;
                    total += price[item-1] * num;
                    System.out.println("点餐成功！");
                    break;
                    
                case 2:
                    System.out.println("订单如下：");
                    for (int i = 0; i < menu.length; i++) {
                        if (count[i] != 0) {
                            System.out.println(menu[i] + " " + count[i] + "份 " + price[i] + "元/份");
                        }
                    }
                    System.out.println("总计：" + total + "元");
                    break;
                    
                case 3:
                    System.out.println("请输入要修改的菜品编号：");
                    int item2 = scanner.nextInt();
                    System.out.println("请输入修改后的数量：");
                    int num2 = scanner.nextInt();
                    total -= price[item2-1] * count[item2-1];
                    count[item2-1] = num2;
                    total += price[item2-1] * count[item2-1];
                    System.out.println("修改成功！");
                    break;
                    
                case 4:
                    System.out.println("请输入要删除的菜品编号：");
                    int item3 = scanner.nextInt();
                    total -= price[item3-1] * count[item3-1];
                    count[item3-1] = 0;
                    System.out.println("删除成功！");
                    break;
                    
                case 5:
                    System.out.println("感谢使用食堂点餐系统，再见！");
                    break;
                    
                default:
                    System.out.println("输入有误，请重新输入！");
                    break;
            }
        }
    }
}

这个程序模拟了一个简单的食堂点餐系统，可以实现点餐、查看订单、修改订单和删除订单等功能。您可以根据具体需求对程序进行修改和完善。