简单订餐系统Java程序

import java.util.*;
public class ChiHuoLianMeng {
public static void main(String[] args) {
// 数据:订单信息
String[] dingcanren = new String[10]; // 订餐人名称
String[] canpin = new String[10]; // 所选菜品
String[] shuliang = new String[10]; //点菜份数
int[] time = new int[10]; // 送餐时间
String[] address = new String[10]; // 送餐地址
int[] zhuangtai = new int[10]; // 订单状态：已预定 0;已完成1
double[] sum = new double[10]; // 总金额
//预先的2个订单信息
dingcanren[0] = "张晴";
canpin[0] = "鱼香肉丝 ";
shuliang[0] = "1份"; 
time[0] = 12;
address[0] = "天成路209号";
sum[0] = 23.0;
zhuangtai[0] = 1;
dingcanren[1] = "张晴";
canpin[1] = "红烧带鱼";
shuliang[1] = "2份"; 
time[1] = 12;
address[1] = "天成路209号";
sum[1] = 76.0;
zhuangtai[1] = 0;
// 可供选择的菜品
String[] caipinming = { "红烧带鱼", "鱼香肉丝", "时令鲜蔬" }; // 菜品名称
double[] caipinprices = new double[] { 38.0, 18.0, 10.0 }; // 菜品单价
int[] dianzanshu = new int[10];
Scanner input = new Scanner(System.in);
int num = -1; // 记录用户输入数字
System.out.println("\n欢迎使用“吃货联盟订餐系统”");
// 循环：显示菜单
do {
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(); // 用户选择功能
boolean shifoudingcan = false;  //是否可以订餐
boolean shifouqianshou = false;  //是否签收
boolean shifoushanchu = false;  //是否删除
// 用户选择的功能编号
switch (choose) {
case 1:// 我要订餐
System.out.println("***我要订餐***");
for (int j = 0; j < dingcanren.length; j++) {
                   if(dingcanren[j] == null){  //找到第一个空位置，可以添加订单信息
                  shifoudingcan = true;  //true可以订餐
// 显示供选择的菜品信息
System.out.println("序号" + "\t" + "菜名"+"\t"+"单价"+"\t"+"点赞数");
for (int i = 0; i < caipinming.length; i++) {
String price = caipinprices[i] + "元";  //选择菜品价格
String dianzan = (dianzanshu[i]) > 0 ? dianzanshu[i]+ "赞" : "0";
System.out.println((i + 1) + "\t" + caipinming[i] + "\t" +price+"\t"+ dianzan);
}
//输入所选餐品/份数
System.out.print("请选择您要点的菜品编号:");
int choosecanpin = input.nextInt();
System.out.print("请选择您需要的份数:");
int number = input.nextInt();
String xuancai = caipinming[choosecanpin - 1];
String fenshu = number+"份";
double zongjia = caipinprices[choosecanpin - 1] * number;
//餐费满50元，免送餐费
double songcanfei = (zongjia>=50)?0:5;                   
System.out.print("请输入订餐人姓名：");
String name = input.next();
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）:");
int shijian = input.nextInt();
while (shijian < 10 || shijian > 20) {
System.out.print("您的输入有误，请输入10~20间的整数！");
shijian = input.nextInt();
}
System.out.print("请输入送餐地址：");
String dizhi = input.next();

System.out.println("订餐成功！");
System.out.println("您订的是："+xuancai);
System.out.println("订了"+fenshu);
System.out.println("订餐人："+name);
System.out.println("送餐时间："+shijian+"点");
System.out.println("餐费："+zongjia+"元，送餐费"+songcanfei+"元");
System.out.println("总金额："+(zongjia+songcanfei)+"元。");
//数组数据
dingcanren[j] = name;
canpin[j] = xuancai;
shuliang[j]=fenshu;
time[j] = shijian;
address[j] = dizhi;
sum[j] = zongjia+songcanfei;
break;
                   }
}
//没有空的位置
if(!shifoudingcan == true){
System.out.println("对不起，您的餐袋已满！");
}
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份数\t送餐时间\t送餐地址\t\t总金额\t订单状态");
for(int i=0;i<dingcanren.length;i++){
if(dingcanren[i]!=null){  
String state = (zhuangtai[i]==0)?"已预定":"已完成";
String songcnashijian = time[i]+"点";
String sumPrice = sum[i]+"元";
System.out.println((i+1)+"\t"+dingcanren[i]+"\t"+canpin[i]+"\t"+shuliang[i]+"\t"+songcnashijian+"\t"+address[i]+"\t"+sumPrice+"\t"+state);
}
}
break;
case 3:// 签收定单
System.out.println("***签收定单***");
System.out.print("请选择要签收的订单序号：");
int qianshoudingdan = input.nextInt();
for(int i=0;i<dingcanren.length;i++){
//状态为已预定，序号为用户输入的订单序号
if(dingcanren[i]!=null && zhuangtai[i]==0 && qianshoudingdan==i+1){
zhuangtai[i] = 1; //将状态值置为已完成
System.out.println("订单签收成功！");
shifouqianshou = true;
break;
//状态为已完成，序号为用户输入的订单序号
}else if(dingcanren[i]!=null && zhuangtai[i]==1 && qianshoudingdan==i+1){
System.out.println("您选择的订单已完成签收，不能再次签收！");
shifouqianshou = true;
break;
}else if(i+1<qianshoudingdan){
System.out.println("您选择的订单不存在！");
break;
}
}
//未找到的订单序号时不能签收
if(shifouqianshou == false){
System.out.println("对不起，此订单不存在！");
}
break;
case 4:// 删除订单
System.out.println("***删除订单***");
System.out.print("请输入要删除的订单序号:");
int shanchu = input.nextInt();
for(int i=0;i<dingcanren.length;i++){
//状态值为已完成  序号值为用户输入的序号
if(dingcanren[i]!=null && zhuangtai[i]==1 && shanchu==i+1){
shifoushanchu = true;
//执行删除操作:删除位置后的元素依次前移
for(int j=shanchu-1;j<dingcanren.length-1;j++){
dingcanren[j] = dingcanren[j+1];
canpin[j] = canpin[j+1];
shuliang[j] = shuliang[j+1];
time[j] = time[j+1];
address[j] = address[j+1];
zhuangtai[j] = zhuangtai[j+1];
}
//最后一位清空
dingcanren[dingcanren.length-1] = null;
canpin[dingcanren.length-1] = null;
shuliang[dingcanren.length-1] = null;
time[dingcanren.length-1] = 0;
address[dingcanren.length-1] = null;
zhuangtai[dingcanren.length-1] = 0;

System.out.println("删除订单成功！");
break;
//状态值为已预定  序号值为用户输入的序号
}else if(dingcanren[i]!=null && zhuangtai[i]==0 && shanchu==i+1){
System.out.println("您选择的订单未签收，不能删除！");
shifoushanchu = true;
break;
}
}
//未找到序号的订单时不能删除
if(shifoushanchu == false){
System.out.println("您要删除的订单不存在！");
}
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 < caipinming.length; i++) {
String price = caipinprices[i] + "元";
String dianzan = (dianzanshu[i]) > 0 ? dianzanshu[i]+ "赞" : "0赞";

System.out.println((i + 1)+"\t"+caipinming[i]+"\t"+price+"\t"+dianzan);
}
//点赞菜品
System.out.print("请选择您要点赞的菜品序号：");
int dianzan = input.nextInt();
if(dianzan>=1 && dianzan<=3){
dianzanshu[dianzan-1]++;
System.out.println("点赞成功！");
}else{
System.out.println("不存在该餐品！");
}
break;
case 6:// 退出系统
break;
default:
break;
}
//用户返回
if (choose<1 || choose>5) {
break;
}else{
System.out.print("输入0返回：");
num = input.nextInt();
}
} while (num == 0);
System.out.println("谢谢使用，欢迎下次光临！");
}
}