本文实例为大家分享了Java实现简单订餐系统的具体代码，供大家参考，具体内容如下

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++) { //todoif(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"); //todofor(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***"); //todoSystem.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:"); //todoint 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");} //todoSystem.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！");}}

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