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小编给大家分享一下java实现订餐系统的方法，希望大家阅读完这篇文章后大所收获，下面让我们一起去探讨吧！
import java.util.Scanner;
public class versionAlliance {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
String[] names=new String[5];//客户姓名
String[] dishes= {"红烧带鱼","鱼香肉丝","时令鲜蔬"};//菜品名称
double[] prices= {38.0,20.0,10.0};//菜品价格
String[] disMegs=new String[5];
int[] praiseNums=new int[3];//点赞数
int times[]=new int[5];//送餐时间
String addresses[]=new String[5];//送餐地址
int[] states=new int[5];//订单状态
double[] sumPrices=new double[5];//订单金额
int chose;
int chose1 = 1;
do {
System.out.println("欢迎使用“吃货联盟订餐系统”");
System.out.println("*****************************");
System.out.println("1.我要订餐");
System.out.println("2.查看餐代");
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：");
chose = in.nextInt();
switch(chose) {
case 1:
System.out.println("*****我要订餐*****");
System.out.print("请输入订餐人姓名：");
for (int i = 0; i < names.length; i++) {
if (names[i]==null) {
names[i]=in.next();
break;
}
}
System.out.println("序号\t菜名\t单价\t点赞数");
System.out.println("1\t"+dishes[0]+"\t"+prices[0]+"\t"+praiseNums[0]);
System.out.println("2\t"+dishes[1]+"\t"+prices[1]+"\t"+praiseNums[1]);
System.out.println("3\t"+dishes[2]+"\t"+prices[2]+"\t"+praiseNums[2]);
System.out.println("请选择您要点的菜品编号：");
int No=in.nextInt();
String disMeg=null;
double price=0;
double sumPrice=0;
if(No==1) {
disMeg=dishes[0];
price=prices[0];
}else if(No==2) {
disMeg=dishes[1];
price=prices[1];
}else if(No==3) {
disMeg=dishes[2];
price=prices[2];
}
System.out.println("请选择您需要的份数：");
int copies=in.nextInt();
System.out.println("请输入送餐时间：");
int time=in.nextInt();
for (int i = 0; i < names.length; i++) {
if (times[i]==0) {
times[i]=time;
break;
}
}
System.out.println("请输入送餐地址：");
for (int i = 0; i < names.length; i++) {
if (addresses[i]==null) {
addresses[i]=in.next();
break;
}
}
sumPrice=copies*price;
for (int i = 0; i < names.length; i++) {
if (sumPrices[i]==0) {
sumPrices[i]=sumPrice;
break;
}
}
for (int i = 0; i < names.length; i++) {
if(disMegs[i]==null) {
disMegs[i]=disMeg+copies;
break;
}
}
for (int i = 0; i < names.length; i++) {
if(states[i]==0) {
states[i]=1;
break;
}
}
System.out.println("订餐成功！");
System.out.println("您订的是："+disMeg+" "+copies+"份");
System.out.println("送餐时间："+time+"点");
System.out.println("餐费："+sumPrice+"元");
System.out.println("输入0返回，其他退出：");
chose1=in.nextInt();
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\t送餐时间\t送餐地址\t总金额\t订单状态");
for (int i = 0; i < names.length; i++) {
if(names[i]!=null) {
String state=(states[i]==1)?"已预订":"已完成";
System.out.println((i+1)+"\t"+names[i]+"\t"+disMegs[i]+"份"+"\t"+times[i]
+"点"+"\t"+addresses[i]+"\t"+sumPrices[i]+"\t"+state);
}
}
System.out.println("输入0返回，其他退出：");
chose1=in.nextInt();
break;
case 3:
System.out.println("***签收订单***");
System.out.println("请选择要签收的订单号：");
int num=in.nextInt();
if(states[num-1]==1) {
states[num-1]=2;
System.out.println("订单签收成功！");
}else if(states[num-1]==2) {
System.out.println("订单已签收！");
}else {
System.out.println("无此订单！");
}
System.out.println("输入0返回，其他退出：");
chose1=in.nextInt();
break;
case 4:
System.out.println("***删除订单***");
System.out.println("请输入要删除的订单号:");
int num1=in.nextInt();
if(names[num1-1]!=null&&states[num1-1]==2) {
for (int i=num1-1; i < names.length-1; i++) {
names[i]=names[i+1];
times[i]=times[i+1];
states[i]=states[i+1];
addresses[i]=addresses[i+1];
sumPrices[i]=sumPrices[i+1];
disMegs[i]=disMegs[i+1];
}
System.out.println("订单删除成功！");
}else if(names[num1-1]!=null&&states[num1-1]==1) {
System.out.println("订单未签收，不可删除！");
}else if(names[num1-1]==null) {
System.out.println("不存在此订单！");
}
System.out.println("输入0返回，其他退出：");
chose1=in.nextInt();
break;
case 5:
System.out.println("***我要点赞***");
System.out.println("序号\t菜名\t单价");
System.out.println(1+"\t"+dishes[0]+"\t"+prices[0]+"\t"+praiseNums[0]+"赞");
System.out.println(2+"\t"+dishes[1]+"\t"+prices[1]+"\t"+praiseNums[1]+"赞");
System.out.println(3+"\t"+dishes[2]+"\t"+prices[2]+"\t"+praiseNums[2]+"赞");
System.out.println("请选择您要点赞的序号：");
int num3=in.nextInt();
switch(num3) {
case 1:
praiseNums[0]++;
System.out.println("点赞成功！");
break;
case 2:
praiseNums[1]++;
System.out.println("点赞成功！");
break;
case 3:
praiseNums[2]++;
System.out.println("点赞成功！");
break;
}
System.out.println("输入0返回，其他退出：");
chose1=in.nextInt();
break;
default:
System.out.println("退出系统！");
return;
}
}while(chose1==0);
System.out.println("退出系统！");
}
}