[Java] 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！");
}
}