用java实现简易外卖订餐系统，供大家参考，具体内容如下
一、使用技术
javaSE
二、实现功能
外卖订餐系统
具体要求如下：
使用选择结构，循环结构，数组的知识实现一个外卖订餐系统
三、运行效果图
1.订餐功能
2.查看餐袋
3.签收订单
4.删除订单
5.点赞
6.退出
代码实现
public class Order {
public static void main(String[] args) {
int zero = 1;
int x = 0;//订单数组下标
String[] name = new String[100];
int[] time = new int[100];//点餐时间
String[] menu = new String[100];
double[] price = new double[100];
int[] od = new int[100];//订单序号
String[] adress = new String[100];//送餐地址
int[] menuNum = new int[100];//点菜份数
String[] yuDing = new String[100];//订单状态
int a = 0;//点赞数
int b = 0;//点赞数
int c = 0;//点赞数
int panduan = 0;//判断是否有此订单
Scanner sc = new Scanner(System.in);
do {
System.out.println("欢迎使用“外卖订餐系统”");
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.println("请选择：");
int num = sc.nextInt();
while (num < 1 || num > 6) {
System.out.println("您输入的选项没有，重新输入");
num = sc.nextInt();
}
if (num == 1) {
od[x] = x + 1;
yuDing[x] = "已预订";
System.out.println("***我要订餐***");
System.out.println("请输入订餐人姓名：");
name[x] = sc.next();
System.out.println("序号" + " " + "菜名" + " " + "单价");
System.out.println(1 + " " + "红烧茄子" + " " + 24.00);
System.out.println(2 + " " + "糖醋排骨" + " " + 36.00);
System.out.println(3 + " " + "鱼香肉丝" + " " + 32.00);
System.out.println("请选择您想要点的菜品编号：");
int bianHao = sc.nextInt();
while (bianHao < 1 || bianHao > 3) {
System.out.println("您选择的菜品没有，再次输入");
bianHao = sc.nextInt();
}
if (bianHao == 1) {
menu[x] = "红烧茄子";
price[x] = 24.00;
} else if (bianHao == 2) {
menu[x] = "糖醋排骨";
price[x] = 36.00;
} else if (bianHao == 3) {
menu[x] = "鱼香肉丝";
price[x] = 32.00;
}
System.out.println("请选择您需要的份数：");
menuNum[x] = sc.nextInt();
while (menuNum[x] < 1) {
System.out.println("您输入的数量不合法，再次选择");
menuNum[x] = sc.nextInt();
}
System.out.println("请选输入送餐时间（送餐时间是10点至20点间整点送餐）：");
time[x] = sc.nextInt();
while (time[x] < 10 || time[x] > 20) {
System.out.println("您选择的时间不在送餐时间内,再次选择");
time[x] = sc.nextInt();
}
System.out.println("请输入送餐地址");
adress[x] = sc.next();
System.out.println("订餐成功！！！");
System.out.println("您订的是：" + menu[x] + " " + menuNum[x] + "份");
System.out.println("送餐时间：" + time[x] + "点");
System.out.println("餐费：" + menuNum[x] * price[x] + "元" + " "
+ "送餐费：6元" + " " + "总计：" + (menuNum[x] * price[x] + 6) + "元");
System.out.println("输入0返回：");
zero = sc.nextInt();
while (zero != 0) {
System.out.println("输入错误，再次输入");
zero = sc.nextInt();
}
x++;
} else if (num == 2) {
zero = 1;
System.out.println("***查看餐带***");
System.out.println("序号" + " " + "订餐人" + " " + "餐品信息"
+ " " + "送餐时间" + " " + "送餐地址"
+ " " + "总金额" + " " + "订单状态");
for (int i = 0; i < x; i++) {
if (od[i] != -1) {
System.out.println(od[i] + " " + name[i] + " " + menu[i]
+ " " + time[i] + " " + adress[i]
+ " " + (menuNum[i] * price[i] + 6)
+ " " + yuDing[i]);
}
}
System.out.println("输入0返回：");
zero = sc.nextInt();
while (zero != 0) {
System.out.println("输入错误，再次输入");
zero = sc.nextInt();
}
} else if (num == 3) {
zero = 1;
System.out.println("***签收订单***");
System.out.println("请选择要签收的订单的序号：");
int numc = sc.nextInt();
for (int i = 0; i < od.length; i++) {
if (numc == od[i]) {
yuDing[i] = "已签收";
System.out.println("订单签收成功！");
panduan = 1;
}
}
if (panduan != 1) {
System.out.println("无此订单");
}
System.out.println("输入0返回：");
zero = sc.nextInt();
while (zero != 0) {
System.out.println("输入错误，再次输入");
zero = sc.nextInt();
}
} else if (num == 4) {
zero = 1;
panduan = 0;
System.out.println("***删除订单***");
System.out.println("请选择要删除的订单的序号：");
int numd = sc.nextInt();
for (int i = 0; i < od.length; i++) {
if (numd == od[i]) {
od[i] = -1;
System.out.println("订单删除成功！");
panduan = 1;
}
}
if (panduan != 1) {
System.out.println("无此订单");
}
System.out.println("输入0返回：");
zero = sc.nextInt();
while (zero != 0) {
System.out.println("输入错误，再次输入");
zero = sc.nextInt();
}
} else if (num == 5) {
zero = 1;
System.out.println("***我要点赞***");
System.out.println("序号" + " " + "菜名" + " " + "单价");
System.out.println(1 + " " + "红烧茄子" + " " + 24.00 + " " + a + "赞");
System.out.println(2 + " " + "糖醋排骨" + " " + 36.00 + " " + b + "赞");
System.out.println(3 + " " + "鱼香肉丝" + " " + 32.00 + " " + c + "赞");
System.out.println("请选择要点赞的菜品的序号：");
int zan = sc.nextInt();
while (zan < 1 || zan > 3) {
System.out.println("您输入的序号错误，再次输入");
zan = sc.nextInt();
}
if (zan == 1) {
a++;
} else if (zan == 2) {
b++;
} else if (zan == 3) {
c++;
}
System.out.println("输入0返回：");
zero = sc.nextInt();
while (zero != 0) {
System.out.println("输入错误，再次输入");
zero = sc.nextInt();
}
} else if (num == 6) {
zero = 1;
System.out.println("谢谢使用，欢迎下次光临！");
return;
}
} while (zero == 0);
}
}
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