Java实现简单订餐系统

import java.util.Scanner;
import java.util.*;
 
public class OrderingMsg {
 
public static void main(String[] args) {
// 数据主体：一组订单信息
String[] names = new String[4]; // 订餐人名称
String[] dishMegs = new String[4]; // 所选菜品
int[] times = new int[4]; // 送餐时间
String[] addresses = new String[4]; // 送餐地址
int[] states = new int[4]; // 订单状态： 0：已预定 1：已完成
double[] sumPrices = new double[4]; // 总金额
 
//初始化2个订单信息
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;
 
names[1] = "张晴";
dishMegs[1] = "鱼香肉丝 2份";
times[1] = 18;
addresses[1] = "天成路207号";
sumPrices[1] = 20.0;
 
// 供选择的菜品信息
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];
 
Scanner input = new Scanner(System.in);
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”");
// 循环：显示菜单，根据用户选择的数字执行相应功能
do {
// 显示菜单 
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 choose = input.nextInt(); // 记录用户选择的功能编号
boolean isAdd = false; //记录是否可以订餐
boolean isSignFind = false; //找到要签收的订单
boolean isDelFind = false; //找到要删除的订单
// 根据用户选择的功能编号执行相应功能
switch (choose) {
case 1:
// 我要订餐
System.out.println("***我要订餐***");
System.out.print("请输入订餐人姓名：");
String name=input.next();
isAdd=true;
int j = 0;
for (; j < names.length; j++) { 
        //todo
if(names[j]==null){
 
names[j]=name;
break;
} 
else {
isAdd=true;
}
     }
 
if(!isAdd){
System.out.println("对不起，您的餐袋已满！");
}
else {
System.out.println("序号"+"\t"+"菜品名"+"\t"+"价格");
for(int i=0;i<dishNames.length;i++){
System.out.print(i+1+"\t"+dishNames[i]+"\t"+prices[i]+"\n");
 
}
System.out.print("请输入菜品编号：");
int dishNum=input.nextInt();
System.out.print("请输入菜品数量：");
int dishCnt=input.nextInt();
String dishMeg=dishNames[dishNum-1]+dishCnt+"份";
dishMegs[j]=dishMeg;
System.out.print("请输入收货地址：");
String Addr=input.next();
addresses[j]=Addr;
System.out.print("请输入收货时间：");
int time=input.nextInt();
times[j]=time;
double sumPrice=prices[dishNum-1]*dishCnt;
double deliCharge=(sumPrice>50)?0:5;
System.out.println("餐费："+sumPrice+"元，送餐费："+deliCharge+"元，总计："+(sumPrice+deliCharge)+"元。");
sumPrices[j]=sumPrice+deliCharge;
}
break;
case 2:
// 查看餐袋
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");
 //todo
for(int i=0;names[i]!=null;i++) {
String sta=(states[i]==1)?"已完成":"已预定";
System.out.print((i+1)+"\t"+names[i]+"\t"+dishMegs[i]+"\t"+times[i]+"\t"+addresses[i]+"\t"+sumPrices[i]+"\t"+sta+"\n");
 
}
break;
case 3:
// 签收定单
System.out.println("***签收定单***");
 
 //todo
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;names[i]!=null;i++) {
String sta=(states[i]==1)?"已完成":"已预定";
System.out.print((i+1)+"\t"+names[i]+"\t"+dishMegs[i]+"\t"+times[i]+"\t"+addresses[i]+"\t"+sumPrices[i]+"\t"+sta+"\n");
 
}
System.out.print("请选择要签收的订单序号：");
int n=input.nextInt();
states[n-1]=1;
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;names[i]!=null;i++) {
String sta=(states[i]==1)?"已完成":"已预定";
System.out.print((i+1)+"\t"+names[i]+"\t"+dishMegs[i]+"\t"+times[i]+"\t"+addresses[i]+"\t"+sumPrices[i]+"\t"+sta+"\n");
 
}
break;
case 4:
// 删除订单
System.out.println("***删除订单***");
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<4;i++) {
String sta=(states[i]==1)?"已完成":"已预定";
System.out.print((i+1)+"\t"+names[i]+"\t"+dishMegs[i]+"\t"+times[i]+"\t"+addresses[i]+"\t"+sumPrices[i]+"\t"+sta+"\n");
 
}
System.out.print("请输入要删除的订单序号:");
 //todo
int m=input.nextInt();
for(int k=m; k<4;k++)
{
names[k-1]=names[k];
dishMegs[k-1]=dishMegs[k];
times[k-1]=times[k];
addresses[k-1]=addresses[k];
sumPrices[k-1]=sumPrices[k];
states[k-1]=states[k];
}
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<4;i++) {
String sta=(states[i]==1)?"已完成":"已预定";
System.out.print((i+1)+"\t"+names[i]+"\t"+dishMegs[i]+"\t"+times[i]+"\t"+addresses[i]+"\t"+sumPrices[i]+"\t"+sta+"\n");
 
}
break;
case 5:
// 我要点赞
System.out.println("***我要点赞***");
// 显示菜品信息
System.out.println("序号" + "\t" + "菜名"+"\t"+"单价");
for(int i=0;i<dishNames.length;i++){
System.out.print(i+1+"\t"+dishNames[i]+"\t"+prices[i]+"\t"+praiseNums[i]+"赞"+"\n");
}
 //todo
System.out.print("请输入点赞序号：");
int number=input.nextInt();
praiseNums[number-1]=praiseNums[number-1]+1;
System.out.println("序号" + "\t" + "菜名"+"\t"+"单价");
for(int i=0;i<dishNames.length;i++){
System.out.print(i+1+"\t"+dishNames[i]+"\t"+prices[i]+"\t"+praiseNums[i]+"赞"+"\n");
}
break;
case 6:
// 退出系统
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("谢谢使用，欢迎下次光临！");
}
}