Java小项目（二）---外卖订餐系统_学完java基础后的项目

一、使用技术

Java SE

二、实现功能

使用选择结构，循环结构，数组的知识实现一个外卖订餐系统

三、运行效果图

3.1 订餐功能

3.2 查看餐袋

3.3 签收订单

3.4 删除订单

3.5 点赞

3.6 退出

四、实现的代码

4.1 Food 菜单类

public class Food {
    //菜单类：序号、菜名、单价
    private int id;
    private String name;
    private double price;
    //无参构造方法

    public Food() {
    }
    //有参构造方法


    public Food(int id, String name, double price) {
        this.id = id;
        this.name = name;
        this.price = price;
    }
    //重写toString方法

    @Override
    public String toString() {
        return id+"\t"+name+"\t"+price+"元";
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }
}
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4.2 Memu订单类

public class Memu {
    //订单类：序号、订餐人、餐品信息、送餐日期、送餐地址、总金额、订单状态
    private int id;
    private String name;
    private String foodMes;
    private int time;
    private String address;
    private double money;
    private  String now;
    //无参构造方法

    public Memu() {
    }
    //有参构造方法

    public Memu(int id, String name, String foodMes, int time, String address, double money, String now) {
        this.id = id;
        this.name = name;
        this.foodMes = foodMes;
        this.time = time;
        this.address = address;
        this.money = money;
        this.now = now;
    }
    //重写toString方法

    @Override
    public String toString() {
        return id+"\t"+name+"\t"+foodMes+"\t"+time+"点\t"+address+"\t"+money+"元\t"+now;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getFoodMes() {
        return foodMes;
    }

    public void setFoodMes(String foodMes) {
        this.foodMes = foodMes;
    }

    public int getTime() {
        return time;
    }
    //增加时间输入的判断
    public void setTime(int time) {
        if (time>=10&&time<=20){
            this.time = time;
        }else{
            System.out.println("输入错误，默认12点送餐");
            this.time = 12;
        }

    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public double getMoney() {
        return money;
    }

    public void setMoney(double money) {
        this.money = money;
    }

    public String getNow() {
        return now;
    }

    public void setNow(String now) {
        this.now = now;
    }
}

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4.3 OrderMange外卖订餐系统测试类

import java.util.Scanner;

public class OrderMange {
    //外卖订餐系统测试类
    public static void main(String[] args) {
        //1.定义Food对象数组并赋值
        Food[] foods=new Food[3];
        foods[0]=new Food(1,"红烧茄子",24.0);
        foods[1]=new Food(2,"红烧排骨",36.0);
        foods[2]=new Food(3,"鱼香肉丝",32.0);
        //2.定义Scanner对象
        Scanner sc = new Scanner(System.in);
        //3.定义菜单对象和订单序号
        Memu memu1 = new Memu();
        memu1.setId(1);
        //4.定义循环控制变量
        boolean isFood=true;
        //5.定义返回0循环控制变量和num0
        boolean is0=true;
        int num0=1;
        //6.定义点赞数和数组
        int[] goodNum={0,0,0};
        System.out.println("欢迎使用“外卖订餐系统”");
        while (isFood){
            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.print("请选择：");
            int choseNum = sc.nextInt();//7.定义选择的数字
            switch (choseNum){
                case 1:
                    System.out.println("***我要订餐***");
                    System.out.print("请输入订餐人姓名：");
                    memu1.setName(sc.next());
                    //8.菜单显示
                    System.out.println("序号\t"+"菜名\t"+"单价");
                    for (int i = 0; i < foods.length; i++) {
                        System.out.println(foods[i].toString());
                    }
                    System.out.print("请选您要点的菜品编号：");
                    int foodId = sc.nextInt();
                    //9.菜品编号判断1-3，否则返回
                    if (foodId>=1&&foodId<=3){

                    }else{
                        System.out.println("输入错误，菜品编号需要输入1-3的整数");
                        break;
                    }
                    System.out.print("请选择您需要的份数：");
                    int foodNumber = sc.nextInt();
                    if(foodId==1){
                        memu1.setFoodMes("红烧茄子\t"+foodNumber+"份");
                    }else if(foodId==2){
                        memu1.setFoodMes("红烧排骨\t"+foodNumber+"份");
                    }else if(foodId==3){
                        memu1.setFoodMes("鱼香肉丝\t"+foodNumber+"份");
                    }
                    System.out.print("请输入送餐时间（送餐时间是10点至20点间整点送餐）");
                    memu1.setTime(sc.nextInt());
                    System.out.print("请输入送餐地址：");
                    memu1.setAddress(sc.next());
                    System.out.println("订餐成功！");
                    System.out.println("您订的是："+memu1.getFoodMes());
                    System.out.println("送餐时间："+memu1.getTime()+"点");
                    memu1.setMoney(foods[foodId-1].getPrice()*foodNumber+6.0);
                    System.out.println("餐费："+foods[foodId-1].getPrice()*foodNumber+"元，送餐费：6.0元，总计："+memu1.getMoney()+"元.");
                memu1.setNow("已预订");
                  //10.输入0才返回判断输入的值为0才返回
                    while (is0){
                        System.out.print("输入0返回：");
                         num0 = sc.nextInt();
                        if (num0==0){
                            is0=false;
                        }
                    }
                    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"+"送餐日期\t"+"送餐地址\t"+"总金额\t"+"订单状态");
                    System.out.println(memu1.toString());
                    //循环变量初始化
                    is0=true;
                    //判断输入的值为0才返回
                    while (is0){
                        System.out.print("输入0返回：");
                         num0 = sc.nextInt();
                        if (num0==0){
                            is0=false;
                        }
                    }
                    break;
                case 3:
                    System.out.println("***签收订单***");
                    System.out.print("请选择要签收的订单序号：");
                    int num3 = sc.nextInt();
                    //和当前订单序号进行判断
                    if (num3==memu1.getId()){
                        System.out.println("订单签收成功！");
                    }else{
                        System.out.println("签收失败！没有这个订单！");
                    }
                    //循环变量初始化，判断输入的值为0才返回
                    is0=true;
                    while (is0){
                        System.out.print("输入0返回：");
                        num0 = sc.nextInt();
                        if (num0==0){
                            is0=false;
                        }
                    }
                    break;
                case 4:
                    System.out.println("***删除订单***");
                    System.out.print("请输入要删除的订单序号：");
                    int num4 = sc.nextInt();
                    //和当前订单序号进行判断
                    if (num4==memu1.getId()){
                        System.out.println("删除订单成功！");
                    }else{
                        System.out.println("删除订单失败！没有这个订单！");
                    }
                    //循环变量初始化，判断输入的值为0才返回.
                    is0=true;
                    while (is0){
                        System.out.print("输入0返回：");
                         num0 = sc.nextInt();
                        if (num0==0){
                            is0=false;
                        }
                    }
                    break;
                case 5:
                    System.out.println("***我要点赞***");
                    //6.菜单显示
                    System.out.println("序号\t"+"菜名\t"+"单价");
                    for (int i = 0; i < foods.length; i++) {
                        System.out.println(foods[i].toString()+"\t"+goodNum[i]+"赞");
                    }
                    System.out.print("请输入要点赞的菜品序号：");
                    int num5 = sc.nextInt();
                    if (num5>=1&&num5<=3){

                    }else{
                        System.out.println("输入错误，菜品序号需要输入1-3的整数");
                        break;
                    }
                    for (int i = 0; i <foods.length ; i++) {
                        if(num5==foods[i].getId()){
                            goodNum[i]++;
                        }
                    }
                    //循环变量初始化，判断输入的值为0才返回
                    is0=true;
                    while (is0){
                        System.out.print("输入0返回：");
                         num0 = sc.nextInt();
                        if (num0==0){
                            is0=false;
                        }
                    }
                    break;
                case 6:
                    System.out.println("谢谢使用，欢迎下次光临！");
                    isFood=false;
                    break;
                default:
                    break;
            }
        }
    }
}

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