吃货联盟代码

 订餐项目改于2020-09-17

 1.数据初始化。

public class chu{
    //name=菜名
    String[] name = new String[4];
    //dishMegs=菜品及份数
    String[] dishMegs = new String[4];
    //times=送餐时间
    int[] times = new int[4];
    //addresses=送餐地址
    String[] addresses = new String[4];
    //states=订单状态
    int[] states = new int[4];
    //titals=花费的总金额
    double[] totals = new double[4];
    //实现订餐功能
    boolean a;
}

 2.功能编写

import java.util.Scanner;

public class first {
    Scanner input = new Scanner(System.in);
    //menu=菜名
    String[] menu = {"红烧带鱼", "鱼香肉丝", "时令蔬菜"};
    //count=菜品单价
    double[] counts = {38.0, 20.0, 10.0};
    //zan=点赞数
    int[] zans = new int[3];
    chu check=new chu();
    //实现我要订餐
    public boolean add() {
        boolean isAdd = false;
        for (int j = 0; j < check.name.length; j++) {
            if (check.name[j] == null) {
                isAdd = true;
                System.out.println("请输入订餐人的姓名：");
                while (input.hasNextInt()){
                    System.out.println("请输入正确的名字：");
                    int name=input.nextInt();
                }
                //name=订餐人的姓名
                String name = input.next();
                System.out.println("序号			菜名			单价			点赞数");
                for (int i = 0; i < menu.length; i++) {
                    String count = counts[i] + "元";
                    String zan = (zans[i]) > 0 ? zans[i] + "	" + "赞" : "0";
                    System.out.println((i + 1) + "			" + menu[i] + "		" + count + "			" + zan);
                }
                System.out.println("请选择您要点的菜品编号：");
                while (!input.hasNextInt()){
                    System.out.println("请输入正确的数字：");
                    String gun=input.next();
                }
                //choose=要点的菜品编号
                int choose = input.nextInt();
                while (choose < 0 || choose > 3) {
                    System.out.println("输入错误，请输入1至3之间的数");
                    choose = input.nextInt();
                }
                System.out.println("请选择您需要的份数(餐费超过50元会免费配送的哟！)：");
                while (!input.hasNextInt()){
                    System.out.println("请输入正确的数字(餐费超过50元会免费配送的哟！)：");
                    String number=input.next();
                }
                //fen=菜品的份数
                int fen = input.nextInt();
                if (0>fen||fen>200){
                    System.out.println("对不起，我们没有那么多原材料，请重新预订：");
                    add();
                }
                String dishMeg = menu[choose - 1] + "" + fen + "份";
                double sum = counts[choose - 1] * fen;
                //deliCharge=送餐费，如果没够50加付5元，满足50或超过50则不需要付送餐费
                double deliCharge = (sum >= 50) ? 0 : 5;
                double total = sum + deliCharge;
                System.out.println("请输入送餐时间（送餐时间是10点至20点整点送餐）：");
                int time = input.nextInt();
                while (time < 10 || time > 20) {
                    System.out.println("抱歉，我们的送餐时间是10点到20点，请重新选择：");
                    time = input.nextInt();
                }
                System.out.println("请输入送餐地址：");
                String address = input.next();
                String regex = "[u4E00-u9FA5]+";
                while (!(address.matches(regex))){
                    System.out.println("请输入正确的地址：");
                    address=input.next();
                }
                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：" + sum + "元，送餐费" + deliCharge + "元，总计：" + total + "元");
                check.name[j] = name;
                check.dishMegs[j] = dishMeg;
                check.times[j] = time;
                check.addresses[j] = address;
                check.totals[j] = total;
                break;
            }
        }
        if (!isAdd) {
            System.out.println("对不起，您的订单已满！");
            return isAdd;
        } else {
            return isAdd;
        }
    }
    //实现查看餐袋
    public void checks() {
        System.out.println("序号		订餐人姓名	餐品信息			送餐时间		送餐地址		总金额		订单状态");
        for (int i = 0; i < check.name.length; i++) {
            if (check.name[i]!=null){
                String state = (check.states[i] == 0) ? "已预定" : "已完成";
                String date = check.times[i] + "点";
                String total = check.totals[i] + "元";
                System.out.println((i + 1) + "		" + check.name[i] + "   		" + check.dishMegs[i] + "		" + date + "			" + check.addresses[i] + "  		" + total + "		" + state);
            }
        }
    }
    //实现签收订单
    public void sign(){
        boolean isBig=false;
        System.out.println("请选择要签收的订单编号：");
        while (!(input.hasNextInt())){
            System.out.println("请输入正确的数字：");
            String digit = input.next();
        }
        int number=input.nextInt();
        for (int i=0;i<check.name.length;i++){
            if (check.name[i]!=null&&check.states[i]==0&&number==i+1){
                check.states[i]=1;
                System.out.println("订单签收成功！");
                isBig=true;
            }else if (check.name[i]!=null&&check.states[i]==1&&number==i+1){
                System.out.println("您选择的菜单已完成签收，不能再次签收！");
                isBig=true;
            }
        }
        if (!isBig){
            System.out.println("您选择的订单不存在！");
        }
    }
    //实现删除订单
    public void delete(){
        boolean isSmall=false;
        System.out.println("请输入要删除的订单编号：");
        while (!(input.hasNextInt())){
            System.out.println("请输入数字：");
            String figure=input.next();
        }
            int nums=input.nextInt();
        for (int i=0;i<check.name.length;i++){
            if (check.name[i]!=null&&check.states[i]==1&&nums==i+1){
                isSmall=true;
                for (int j=nums-1;j<check.name.length-1;j++){
                    check.name[j]=check.name[j+1];
                    check.dishMegs[j]=check.dishMegs[j+1];
                    check.times[j]=check.times[j+1];
                    check.addresses[j]=check.addresses[j+1];
                    check.states[j]=check.states[j+1];
                    check.totals[j]=check.totals[j+1];
                }
                int endIndex=check.name.length-1;
                check.name[endIndex]=null;
                check.dishMegs[endIndex]=null;
                check.times[endIndex]=0;
                check.addresses[endIndex]=null;
                check.states[endIndex]=0;
                check.totals[endIndex]=0;
                System.out.println("删除订单成功！");
                break;
            }else if (check.name[i]!=null&&check.states[i]==0&&nums==i+1){
                System.out.println("您选择的订单未签收，不能删除！");
                isSmall=true;
                break;
            }
        }
        if (!isSmall){
            System.out.println("您要删除的订单不存在！");
        }
    }
    //实现点赞功能
    public void praise(){
        System.out.println("序号"+"	"+"菜名"+"	"+"单价");
        for (int i=0;i<menu.length;i++){
            String price=counts[i]+"元";
            String priceNum=(zans[i])>0?zans[i]+"赞":"";
            System.out.println((i+1)+"	"+menu[i]+"	"+price+"	"+priceNum);
        }
        System.out.println("请选择您要点赞的菜品序号：");
        while (!(input.hasNextInt())){
            System.out.println("请输入正确的数字：");
            String digitial=input.next();
        }
        int praiseNum=input.nextInt();
        if (praiseNum>=3){
            int num;
            do {
                System.out.println("对不起,输入不符合规范请重新输入：");
                 num=input.nextInt();
            }while (num>3);

        }else {
            zans[praiseNum-1]++;
            System.out.println("点赞成功！");
        }
    }
    //实现满意程度调查
    public void satisfaction(){
        System.out.println("满意程度：");
        while (!input.hasNextInt()){
            System.out.println("请输入1到3的数字哦！");
            String num=input.next();
        }
        int du=input.nextInt();
        switch (du){
            case 1:
                System.out.println("不满意");
                System.out.println("对不起，给亲带来了不便请见谅！我们还会继续努力的(≖ᴗ≖)✧");
                break;
            case 2:
                System.out.println("还行吧");
                System.out.println("谢谢亲的评价！(๑*◡*๑)");
                break;
            case 3:
                System.out.println("非常满意");
                System.out.println("感谢亲的好评，我们会继续努力的！ヾ(^Д^*)/");
                break;
            default:
                System.out.print("您的输入不符合规范哦！");
                satisfaction();
        }
    }
    //实现幸运免单
    public void lucky(){
        System.out.println("欢迎参与我们的幸运免单，你会是那个幸运的人吗？");
        System.out.println("请随机选取一个“四位数”哦：");
        while (!input.hasNextInt()){
            System.out.println("请输入正确的四位数哦：");
            String digit=input.next();
        }
        int num=input.nextInt();
        int max=9999;
        int min=1000;
        int cardNumber=(int)(Math.random()*(max-min)+min);
        if (!(num==cardNumber)){
            System.out.println("对不起，亲不是我们的幸运用户哦！");
        }else {
            System.out.println("恭喜亲成功免单！(◕ᴗ◕✿)");
        }
    }
}

3.测试类。

import java.util.Scanner;

public class eating {
    public static void main(String[] args) {
        boolean isBig=false;
        int bum;
        boolean a=false;
        first check=new first();
        do {
            System.out.println("欢迎使用“吃货联盟订餐系统”");
            System.out.println("*******************************************************");
            System.out.println("1.我要订餐
2.查看餐袋
3.签收订单
4.删除订单
5.幸运免单
6.我要点赞
7.满意程度
8.退出系统");
            System.out.println("********************************************************");
            System.out.println("请选择：");
            Scanner input=new Scanner(System.in);
            while (!input.hasNextInt()){
                System.out.println("输入有误，请重新输入：");
                String xum=input.next();
            }
            int num=input.nextInt();
            switch (num){
                case 1:
                    System.out.println("****我要订餐****");
                    a=check.add();
                    break;
                case 2:
                    System.out.println("****查看餐袋****");
                    if (a) {
                        check.checks();
                    }
                    break;
                case 3:
                    System.out.println("****签收订单****");
                    check.sign();
                    break;
                case 4:
                    System.out.println("****删除订单****");
                    check.delete();
                    break;
                case 5:
                    System.out.println("****幸运免单****");
                    if (a) {
                        check.lucky();
                    }else {
                        System.out.println("您没有参与活动的权限，请先订单！");
                    }
                    break;
                case 6:
                    System.out.println("****我要点赞****");
                    check.praise();
                    break;
                case 7:
                    System.out.println("1.不满意
2.还行吧
3.非常满意");
                    check.satisfaction();
                    break;
                case 8:
                    isBig=true;
                    break;
                default:
                    System.out.print("输入有误！");

            }
            if (!isBig){
                System.out.println("按0返回系统（其他均退出系统）：");
                bum=input.nextInt();
            }else {
                break;
            }
        }while (bum==0);
        System.out.println("谢谢使用，欢迎下次光临！");
    }
}

自己做的一个小项目，总之还是挺满意的。