订餐系统(Dome)

import java.util.Scanner;
public class OrderingMsg {
public static void main(String[] args) throws Exception {
    Scanner scanner = new Scanner(System.in);
    String[] names = new String[6]; // 订餐人姓名
    String[] dishMsgs = new String[6];// 选择菜品
    int[] numbers = new int[6];// 菜品份数
    int[] times = new int[6]; // 送餐时间
    String[] addresses = new String[6];// 送餐地址
    int[] states = new int[6];// 订单状态 0:已经预定 1：已经完成
    double[] sumPrices = new double[6];// 总金额
    int[] praiseNums = new int[6];
    String[] dishNames = { "北京烤鸭", "麻婆豆腐", "松鼠鱼", "红烧带鱼", "时令蔬菜", "辣土豆丝" };
    double[] prices = { 88, 24, 38, 35, 15, 12 };
    System.out.println("欢迎进入surper订餐系统");
    int num = -1; // 输入0 默认返回主菜单
    boolean isExit = false;// 默认不退出
    do {
        System.out.println("**********************");
        System.out.println("1:我要订餐");
        System.out.println("2:查看餐袋");
        System.out.println("3:签收订单");
        System.out.println("4:删除订单");
        System.out.println("5:我要点赞");
        System.out.println("6:退出系统");
        System.out.println("**********************");
        System.out.println("请选择：");
        int choice = scanner.nextInt(); //选择你所需要的服务
        switch (choice) {
        case 1:
            System.out.println("************我要订餐************");
            boolean empty = false;//作一个标记
            for (int i = 0; i < names.length; i++) { // 订餐人的集合
                if (names[i] == null) {
                    empty = true;//订单如果是空的，便可以往里加数据
                    System.out.println("请输入订餐人的姓名：");
                    names[i] = scanner.next(); // 获取订餐人的姓名
                    System.out.println("您可以选择下列的菜品：");
                    System.out.println("序号\t\t\t菜名\t\t\t单价\t\t\t点赞数");
                    for (int j = 0; j < dishNames.length; j++) { // 遍历菜品
                        String praiseNum = (praiseNums[j] > 0) ? praiseNums[j]
                                + "个赞"
                                : "";
                        System.out.println(j + 1 + "\t\t\t" + dishNames[j]
                                + "\t\t\t" + prices[j] + "\t\t\t"
                                + praiseNum);
                    }
                    // 用户开始点菜，并收集信息
                    System.out.println("请您选择菜品的编号：");
                    int choiceName = scanner.nextInt();
                    System.out.println("请您输入点餐的份数：");
                    int number = scanner.nextInt();
                    System.out.println("请您输入送餐的地址：");
                    String address = scanner.next();
                    System.out.println("请您输入送餐的时间：");
                    System.out.println("本店整点送餐：8点至20点");
                    int time = scanner.nextInt();
                    double sumPrice = prices[choiceName - 1] * number;
                    double price = (sumPrice >=50) ? 0 : 5;//判断是否收取运费
                    System.out.println("订单已生成！");
                    System.out.println("您定的菜品是："+ dishNames[choiceName - 1] + "\t" + number+ "份");
                    System.out.print("餐费：" + sumPrice);
                    System.out.print("\t送餐费：" + price);
                    System.out.println("\t总费用：" + (price + sumPrice));
                    // 把输入的信息塞进数组中
                    times[i] = time; // 时间
                    addresses[i] = address; // 地址
                    sumPrices[i] = (sumPrice + price); // 总金额
                    dishMsgs[i] = dishNames[choiceName - 1]; // 定的菜品
                    states[i] = 0; // 订餐的状态
                    numbers[i] = number; // 份数
                    break;
                }
            }
            if (!empty) {// 餐袋已经满了
                System.out.println("餐袋已经满了");
            }
            break;
        case 2:
            System.out.println("************查看餐袋************");
            System.out.println("编号\t\t订餐人\t\t菜品(份数)\t\t送餐时间 \t\t送餐地址\t\t总金额\t\t状态\t\t点赞数量");
            for (int i = 0; i < names.length; i++) {
                if (names[i] != null) { // 有人订餐 的显示
                    String state = (states[i] == 0) ? "已经预定" : "已经完成"; // 获取状态
                    int time = times[i]; // 时间
                    String sumPrice = sumPrices[i] + "元"; // 总金额
                    String address = addresses[i]; // 地址
                    String dishMsg = dishMsgs[i]; // 菜品
                    int count = numbers[i];//份数
                    System.out.println((i + 1) + "\t\t" + names[i] + "\t\t"+ dishMsg + "(" + count + ")" + "\t\t" + time+ " \t\t" + address + "\t\t" + sumPrice+ "\t\t" + state + "\t\t" + praiseNums[i]);
                }
            }
            break;
        case 3:
            System.out.println("************签收订单************");
            System.out.println("请您输入需要签收的订单编号：");
            int sign = scanner.nextInt(); 
            int flag = 0;// 作一个标记，来判断订单是否被签收
            for (int i = 0; i < names.length; i++) {
                if (names[i] != null && states[i] == 0) {//有订单并且可以签收
                    states[i] = 1;// 改变状态
                    flag = 1;
                    break; 
                } else if (names[i] != null && states[i] == 1) {//有订单，并且已被签收
                    flag = 2;
                }
            }
            if (flag == 1) {
                System.out.println("订单已经签收！");
            } else if (flag == 2) {
                System.out.println("订单不能重复签收！");
            } else {
                System.out.println("没有找到您的订单！请您核对编号！");
            }

            break;
        case 4:
            System.out.println("************删除订单************");
            System.out.println("请您输入需要删除的订单编号：");
            int dealNum = scanner.nextInt();
            int deal = 0; // 作一个标记 来判断订单是否被签收以及是否存在
            for (int i = 0; i < names.length; i++) {
                if (names[i] != null && states[dealNum - 1] == 1) { //有订单，并且已签收，可以删除                            
                    // 删除一条信息，将之后的所有信息，依次向前移
                    for (int j = dealNum - 1; j < names.length - 1; j++) {
                        names[j] = names[j + 1]; // 订餐人
                        dishMsgs[j] = dishMsgs[j + 1];// 菜品
                        times[j] = times[j + 1];// 时间
                        addresses[j] = addresses[j + 1];// 地址
                        states[j] = states[j + 1];// 状态
                        numbers[j] = numbers[j + 1];// 份数
                    }
                    deal = 1;
                    break;
                } else if (names[i] != null && states[i] == 0) { // 右订单并且订单还没有签收，便不能删除
                    deal = 2;
                }
            }
            if (deal == 1) {
                System.out.println("订单已经被删除");
            } else if (deal == 2) {
                System.out.println("订单还没有签收 不允许删除！");
            } else {
                System.out.println("没有找到指定的订单！");
            }
            break;
        case 5:
            System.out.println("************我要点赞***************");
            System.out.println("编号\t\t\t菜名\t\t\t价格");
            for (int i = 0; i < dishNames.length; i++) { // 遍历所有的菜名
                String price = prices[i] + "元"; //价格
                String name = dishNames[i];//菜名
                System.out.println((i + 1) + "\t\t\t" + name + "\t\t\t"+ price);
            }
            System.out.println("请您输入点赞的菜品编号：");
            int choiceNum = scanner.nextInt();
            praiseNums[choiceNum - 1]++;// 点赞数累加
            System.out.println("谢谢参与！点赞成功！");
            break;
        case 6:
           // 退出系统
            isExit = true;
            break;
        default:
            // 退出系统
            isExit = true;
            break;
        }
        if (!isExit) { // 默认这是不退出
            System.out.println("输入0返回主菜单！");
            num = scanner.nextInt();
        } else {
            break; // 退出系统
        }
    } while (num == 0);
    System.out.println("谢谢您的光临！！！！！");}
}