吃货联盟

public class eat {

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);
        String[] names = new String[4]; // 订餐人名字
        String[] dishMegs = new String[4]; // 保存所选的信息,包括菜品名及份数
        int[] times = new int[4]; // 保存订餐时间
        double[] sumPrices = new double[4]; // 订餐总金额
        String[] addresses = new String[4]; // 送餐地址
        int[] states = new int[4]; // 保存订单状态:0.表示已预订,1.表示已完成

        names[0] = "张晴";
        dishMegs[0] = "红烧带鱼2份";
        times[0] = 12;
        addresses[0] = "天成路207号";
        sumPrices[0] = 76.0;
        states[0] = 1;

        // 初始化第二条信息
        names[1] = "张晴";
        dishMegs[1] = "红烧带鱼2份";
        times[1] = 18;
        addresses[1] = "天成路207号";
        sumPrices[1] = 76.0;
        states[1] = 0;
        String[] dishNames = { "红烧带鱼", "鱼香肉丝", "时令鲜蔬" }; // 菜品名称
        double[] prices = new double[] { 38.0, 20.0, 10.0 }; // 菜品单价
        int[] praiseNums = new int[3];

        int num = -1; // 用户输入0返回主菜单，否则退出系统
        boolean isExit = false; // 标志用户是否退出系统： true:退出系统

        System.out.println("\n欢迎使用“吃货联盟订餐系统”");

        int number = 0;

        do {
            System.out.println("欢迎进入吃货联盟订餐系统");
            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:");
            num = input.nextInt();

            switch (num) {
        case 1:
            boolean isAdds = false;
            String name = "";
            for (int j = 0; j < names.length; j++) {
                if (names[j] == null) { // 添加订单信息
                isAdds = true;
                System.out.println("请输入订餐人名字:");
                name = input.next();
                // 显示菜单信息
                System.out.println("序号" + "\t" + "菜名" + "\t" + "单价"
                                + "\t" + "点赞数");
                for (int i = 0; i < dishNames.length; i++) {
                    String price = prices[i] + "元";
                    String priaiseNums = (praiseNums[i]) > 0 ? praiseNums[i]
                                + "赞"
                                : "0";
                        System.out.println((i + 1) + "\t" + dishNames[i]
                                + "\t" + price + "\t" + priaiseNums);
                        }

                // 用户点菜
                System.out.println("请选择您要点的菜品编号");
                int chooesDish = input.nextInt();
                System.out.println("请选择你需要的份数:");
                int numbers = input.nextInt();
                String dishMeg = dishNames[chooesDish - 1] + " "
                        + numbers + "份";

                double sumPrice = prices[chooesDish - 1] * numbers; // 餐费满50元,免送餐费5元
                double deliCharge = (sumPrice >= 50) ? 0 : 5;
                System.out.println("请输入送餐时间(送餐时间是10点到20点间整点送餐):");
                int time = input.nextInt();
                while (time < 10 || time > 20) {
                System.out.println("您输入有误,请输入10~20间的整数!");
                time = input.nextInt();
                }
                System.out.println("请输入送货餐地址:");
                String addresses1 = input.next();
                System.out.println("订餐成功!");
                System.out.println("您订的是:" + dishMeg);
                System.out.println("您的送餐时间:" + time + "点");
                System.out.println("餐费:" + sumPrice + "元,送餐费"
                    + deliCharge + "元,总计:"
                    + (sumPrice + deliCharge) + "元");
                        
                names[j] = name;
                dishMegs[j] = dishMeg;
                times[j] = time;
                addresses[j] = addresses1;
                sumPrices[j] = sumPrice + deliCharge;
                    break;
                    }
                }
                if (!isAdds) {
                System.out.println("对不起,您的餐袋已满!");
                isAdds = false;
                } else {
                isAdds = true;
                }
                break;
            case 2:

                System.out.println("***查看餐袋***");
                System.out.println("序号\t订餐人\t餐品信息\t\t送餐日期\t送餐地址\t\t总金额\t订单状态");
                for (int i = 0; i < names.length; i++) {
                    if (names[i] != null) {
                String state = (states[i] == 0) ? "已预定" : "已完成";
                String day = times[i] + "日";
                String sumPrice1 = sumPrices[i] + "元";
                System.out.println((i + 1) + "\t" + names[i] + "\t"
                        + dishMegs[i] + "\t" + day + "\t"
                        + addresses[i] + "\t" + sumPrice1 + "\t"
                        + state);
                    }
                }
                break;
            case 3:
                boolean isadd = false; // 找到签收订单
                System.out.println("请选择你要签收的订单:");
                int isgnorderid = input.nextInt();
                for (int i = 0; i < names.length; i++) {

                    if (names[i] != null && states[i] == 0
                            && isgnorderid == i + 1) {
                    states[i] = 1; // 将状态置为完成
                    System.out.println("订单签收成功!");
                    isadd = true; // 标记已找到账单
                    } else if (names[i] != null && states[i] == 1
                            && isgnorderid == i + 1) {
                    System.out.println("您选择的订单已完成签收,不能再次签收!");
                    isadd = true; // 标记已找到此账单
                    }
                }
                if (!isadd) {
                System.out.println("您选择的账单不存在!");
                }

                break;
            case 4:
                boolean isAdd = false; // 删除订单// 标记是否找到要删除的订单
                System.out.println("请选择要删除的订单:");
                int delId = input.nextInt();
                for (int i = 0; i < names.length; i++) {
                    if (names[i] != null && states[i] == 1
                            && delId == i + 1) {
                    isAdd = true; // 找到订单
                    for (int j = delId - 1; j < names.length - 1; j++) {
                    names[j] = names[j + 1];
                    dishMegs[j] = dishMegs[j + 1];
                    times[j] = times[j + 1];
                    addresses[j] = addresses[j + 1];
                    states[j] = states[j + 1];
                    sumPrices[j] = sumPrices[j + 1]; // 最后一位清空
                        }
                    int endIndex = names.length - 1;
                        names[endIndex] = null;
                        dishMegs[endIndex] = null;
                    times[endIndex] = 0;
                    addresses[endIndex] = null;
                    states[endIndex] = 0;
                    sumPrices[endIndex] = 0;
                    System.out.println("删除订单成功!");
                    break;
                    } else if (names[i] != null && states[i] == 0
                            && delId == i + 1) {
                    System.out.println("您选择的订单未签收,不能删除!");
                    isAdd = true; // 标记已找到账单
                    break;
                    }
                }
                if (!isAdd) {
                System.out.println("您要删除的账单不存在!");
                }
                break;
            case 5:
                System.out.println("序号" + "\t" + "菜名" + "\t" + "单价" + "\t");
                for (int i = 0; i < dishNames.length; i++) {
                String price = prices[i] + "元";
                    
                String priaiseNum = (praiseNums[i]) > 0 ? praiseNums[i]
                            + "赞" : "";
                System.out.println((i + 1) + "\t" + dishNames[i] + "\t"
                            + price + "\t" + priaiseNum);
                }
                System.out.println("请选择您要点赞的菜品序号:");
                int priaiseNum = input.nextInt();
                praiseNums[priaiseNum - 1]++; // 赞数加一
                System.out.println("点赞成功!");

                break;
            case 6:
                isExit = true;
                break;
            default:
                // 退出系统
                isExit = true;
                break;
            }
            if (!isExit) {

                System.out.print("输入0返回：");
                num = input.nextInt();
            } else {

                break;
            }

        } while (num == 0);
        System.out.println("退出系统,谢谢使用!");
    }
}