订song餐系统

帮学弟写个题，正好给大家看看是否有帮助用到。

一个订餐系统 使用数组存数据 ，没有什么复杂的东西。

import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.Arrays;
import java.util.Scanner;

public class test_order {

        /*该系统最多接收4条订餐订单
        String[] names = new String[4]; 保存订餐人姓名s
        String[] dishMegs = new String[4]; 保存所选信息，包括菜品及份数
        int[] times = new int[4]; 保存送餐时间
        String[] addresses = new String[4]; 保存送餐地址
        int[] states = new int[];  保存订单状态 1：表示已完成 0：表示已预订
        double[] sumPrices = new double[4] 保存订单的总金额

        String[] dishNames ={"红烧肉","地三鲜","鸡蛋汤"}; //菜品
        double[] prices = new double[]{38.0,20.0,10.0};//单价
        int[] praiseNums = new int[3];//点赞数

        String[] names = new String[4]; Save the name of the person who ordered

        String[] dishMegs = new String[4]; Save the selected information, including dishes and servings

        int[] times = new int[4]; Save the delivery time

        String[] addresses = new String[4]; Save the delivery address

        int[] states = new int[]; Save the order status. 1: completed. 0: reserved

        Double [] sumPrices = New double[4] Holds the total amount of the order */

    private static String[] names = new String[4];
    private static String[] dishMegs = new String[4];
    private static int[] times = new int[4];
    private static String[] addresses = new String[4];
    private static int[] states = new int[4];
    private static  double[] sumPrices = new double[4];
    private static int retrunFlag =-1;//用户退出系统标识 0返回主菜单 否则退出系统
    private static boolean isExit =false;//标识用户是否退出系统 true为退出系统
    private static Scanner input = new Scanner(System.in);
    private static String[] dishNames ={"红烧肉","地三鲜","鸡蛋汤"}; //菜品
    private static double[] prices = new double[]{38.0,20.0,10.0};//单价
    private static  int[] praiseNums = new int[3];//点赞数

    public static void main(String[] args) {


        System.out.println("欢迎使用订餐系统------------------");
        do{
            test_order.showMenu();
            System.out.println("*********************************");
            System.out.println("1.我要订餐\n 2.查看餐袋\n 3.签收订单\n 4.删除订单\n 5.我要点赞\n 6.退出系统");
            System.out.println("*********************************");
            System.out.println("请选择");
           // Scanner input = new Scanner(System.in);
            int choose=input.nextInt();

            switch (choose){
                case 1:
                    System.out.println("****我要订单***");
                    createOrder();
                    break;
                case 2:
                    System.out.println("****查看餐袋***");
                    queryOrder();
                    break;
                case 3:
                    System.out.println("****签收订单***");
                    signOrder();
                    break;
                case 4:
                    System.out.println("****删除订单***");
                    deleteOrder();
                    break;
                case 5:
                    System.out.println("****我要点赞***");
                    getGood();
                    break;
                case 6:
                   isExit = true;
                    break;
                default:
                    isExit = true;
                    break;
            }
            if(!isExit){
                System.out.println("输入0返回主菜单");
                retrunFlag = input.nextInt();
            }else {
                break;
            }
        }while (retrunFlag == 0);


    }



    //显示餐单
    private static void showMenu(){
        LocalDate date = LocalDate.now(); // gets the current date
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd-MM-yyyy");
        System.out.println("今天是"+date.format(formatter)+"我们菜品有");
        Arrays.stream(dishNames).forEach(System.out::println);
        /*System.out.println("价格是");
        Arrays.stream(prices).forEach(System.out::println);
        System.out.println("点赞数是");
        Arrays.stream(praiseNums).forEach(System.out::println);*/
    }


    //查看餐袋子
    private static void queryOrder(){
        System.out.println("*****查看餐袋子****");
        System.out.println("序号\t\t订餐人\t\t餐品信息\t\t送餐日期\t\t送餐地址\t\t总金额\t\t订单状态");
        for (int i=0;i<names.length;i++){
            if(null != names[0]){
                String state = states[i]==0?"已预约":"已完成";
                String sumPrice = sumPrices[i]+"元";
                String date = times[i]+"日";
                System.out.println((i+1)+"\t\t"+names[i]+"\t\t"+dishMegs[i]+"\t\t"+date+"\t\t"+addresses[i]+"\t\t"+sumPrice+"\t\t"+state);
            }
        }
    }

    //我要订餐
    private static void createOrder() {
        System.out.println("我要订餐");
        Boolean isAdd = false;
        for(int i=0; i<names.length;i++){
            if(null == names[i]){
                isAdd = true;
                System.out.println("请输入订餐人姓名");
                String name = input.next();
                System.out.println("序号"+"\t"+"菜名"+"\t"+"单价"+"\t"+"点赞数");
                for(int j= 0;j<praiseNums.length;j++){
                    String price =prices[j]+"元";
                    String priaiseNum = praiseNums[j]>0?praiseNums[j]+"赞":"0";
                    System.out.println((j+1)+"\t"+dishNames[j]+"\t"+price+"\t"+priaiseNum);
                }
                //用户点餐
                System.out.println("请选择您要点的菜品编号");
                int chooseDish = input.nextInt();
                System.out.println("您需要的份数");
                int number = input.nextInt();
                String dishMeg= dishNames[chooseDish-1]+""+number+"份";
                double sumPrice = prices[chooseDish-1]*number;
                //满50 song 5元
                double deliCharge =sumPrice >=50?0:5;
                System.out.println("请输入送餐时间11点到20点，请输入11-20整点时刻");
                int time = input.nextInt();
                while (time<11|| time>20) {
                        System.out.println("输入时间不正确请从新输入");
                        time = input.nextInt();
                    }
                System.out.println("输入送餐地址");
                String address = input.next();

                //状态0 表示 已预订
                System.out.println("订餐成功");
                System.out.println("您订的是"+dishMeg);
                System.out.println("送餐时间"+time+"点");
                System.out.println("餐费："+sumPrice+"元,送餐费"+deliCharge+"元，总共"+(sumPrice+deliCharge)+"元");
                System.out.println("送餐地址"+address);

                names[i]=name;
                dishMegs[i]=dishMeg;
                times[i]=time;
                addresses[i]=address;
                sumPrices[i]=sumPrice+deliCharge;
                break;
                }
            }
        if(!isAdd) {
            System.out.println("对不起，您的餐带已满");
        }
        }


        private static void signOrder() {
            System.out.println("签收订单");
            Boolean isSignFind =false;
            System.out.println("请确实要签收的序号");
            int signOrderId = input.nextInt();
            for(int i=0;i<names.length;i++){
                if(names[i] != null&& states[i]==0&& signOrderId==i+1){
                    states[i]=1;
                    System.out.println("订单签收成功");
                    isSignFind =true;
                }else if(name[i]!=null && states[i]==1&&signOrderId ==i+1){
                    System.out.println("订单已经签收过，不能再次签收");
                    isSignFind =true;
                }
            }
            if(!isSignFind){
                System.out.println("您选择的订单不存在");
            }
        }


        //删除订单
        private static void deleteOrder() {
            System.out.println("删除订单");
            boolean isDelFind = false;
            System.out.println("输入要删除的订单序号");
            int delid= input.nextInt();
            for(int i=0;i<names.length;i++){
                if(names[i]!=null && states[i]==1&& delid ==i+1){
                    isDelFind =true;
                    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];
                    }
                    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");
                    isDelFind =true;
                    break;
                }
            }
            if(!isDelFind){
                System.out.println("选择删除的订单不存在");
            }

        }

        private static void getGood(){
            System.out.println("我要点赞");
            showMenu();
            System.out.println("选择你要点赞的序号");
            int priaiseNum = input.nextInt();
            praiseNums[priaiseNum-1]++;
            System.out.println("点赞成功");
        }


    }