吃货联盟—Java基础代码实例
作者：互联网
本项目是作者在学习完Java基础之后练习的一个小项目，如下：
package eat;
import java.util.Scanner;
public class MeiTuan {
public static void main(String[] args) {
//首页展示
Scanner sc=new Scanner(System.in);
String[]dishes= {"辣子鸡","麻辣龙虾","红烧肉","蒜泥花甲"};
int[]prices= {38,88,68,48};
String[][]bills=new String[1024][2];
System.out.println("****欢迎来到吃货联盟****");
int chose;
int []honors=new int[1024];
do {
System.out.println("************************");
System.out.println("1、我要订餐");
System.out.println("2、查看订单");
System.out.println("3、确认订单");
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("************************");
chose=sc.nextInt();
switch(chose){
case 1:
System.out.println("我要订餐");
System.out.print("请输入您的姓名：");
String name=sc.next();
System.out.println("序号 \t 菜名 \t\t 单价");
for (int i = 0; i < prices.length; i++) {
System.out.println(i+1+" \t "+dishes[i]+
" \t "+prices[i]+"元");
}
System.out.print("请输入您要点的菜名：");
int rank=sc.nextInt();
System.out.print("请选择份数：");
int pcs=sc.nextInt();
System.out.print("请输入配送地址：");
String address=sc.next();
int time;
do {
System.out.print("请输入您的送餐时间(10-20点整点)：");
time=sc.nextInt();
if(time<10 || time>20) {
System.out.println("不在配送时间，请重新输入！");
}
}while(time<10 || time>20);
int total=prices[rank-1]*pcs;
total=total>50?total:total+6;//三元表达式
System.out.println("尊敬的"+name+" 您点了"+pcs+"份"+dishes[rank-1]+
" 价格为："+total+"元 将于"+time+"点送达，请注意查收！");
for (int i = 0; i < bills.length; i++) {
if (bills[i][1]==null) {
bills[i][0]=dishes[rank-1]+"\t"+pcs+
"\t"+total+"\t"+name+"\t"+address+"\t"+time;
bills[i][1]="已预订";
break;
}
if(i==bills.length-1) {
System.out.println("订单已满，请下次再来！");
}
}
System.out.print("输入0返回");
chose=sc.nextInt();
break;
case 2:
System.out.println("查看订单");
System.out.println
("序号 \t 菜名 \t 份数 \t 总价 \t 姓名 \t 地址 \t 时间 \t 状态");
for (int i = 0; i < bills.length; i++) {
if(bills[i][1]==null) {
break;
}
System.out.println(i+1+" \t "+bills[i][0]+" \t "+bills[i][1]);
}
System.out.print("输入0返回");
chose=sc.nextInt();
break;
case 3:
System.out.println("确认订单");
System.out.println
("序号 \t 菜名 \t 份数 \t 总价 \t 姓名 \t 地址 \t 时间 \t 状态");
for (int i = 0; i < bills.length; i++) {
if(bills[i][1]==null) {
break;
}
System.out.println(i+1+" \t "+bills[i][0]+" \t "+bills[i][1]);
}
System.out.print("请输入要确认的订单编号：");
int confirm=sc.nextInt();
if(bills[confirm-1][1]==null) {
System.out.println("订单不存在，订单确认失败！");
}else if(!bills[confirm-1][1].equals("已预订")) {
System.out.println("订单已完成，不能重复确认！");
}else {
bills[confirm-1][1]="已完成";
System.out.println("签收成功！");
}
System.out.print("输入0返回");
chose=sc.nextInt();
break;
case 4:
System.out.println("删除订单");
System.out.println
("序号 \t 菜名 \t 份数 \t 总价 \t 姓名 \t 地址 \t 时间 \t 状态");
for (int i = 0; i < bills.length; i++) {
if(bills[i][1]==null) {
break;
}
System.out.println(i+1+" \t "+bills[i][0]+" \t "+bills[i][1]);
}
System.out.print("请输入要删除的订单编号：");
int delete=sc.nextInt();
if(delete<1 || delete>1024) {
System.out.println("输入错误！");
}else if(bills[delete-1][1]==null) {
System.out.println("订单不存在！");
}else if(!bills[delete-1][1].equals("已完成")) {
System.out.println("未完成订单不能删除！");
}else {
for (int i =delete; i < bills.length; i++) {
bills[i-1][0]=bills[i][0];
bills[i-1][1]=bills[i][1];
if(bills[i][1]==null) {
break;
}
}
}
System.out.print("输入0返回");
chose=sc.nextInt();
break;
case 5:
System.out.println("我要点赞");
System.out.println("序号 \t 菜名 \t\t 单价 \t 点赞数");
for (int i = 0; i < dishes.length; i++) {
System.out.println
(i+1+" \t "+dishes[i]+" \t "+prices[i]+" 元\t "+honors[i]);
}
System.out.println("请输入您要点赞的菜品序号：");
int honor=sc.nextInt();
if(honor<1 || honor>dishes.length) {
System.out.println("输入有误！");
}else {
honors[honor-1]++;
System.out.println
(dishes[honor-1]+"点赞成功，赞数变味："+honors[honor-1]);
}
System.out.println();
System.out.print("输入0返回");
chose=sc.nextInt();
break;
case 6:
System.out.println("退出系统");
break;
default:
System.out.println("输入错误！");
chose=-1;
}
}while(chose==0);
System.out.println("欢迎下次再来！");
}
}
标签：Java,int,吃货,System,sc,实例,println,bills,out 来源： https://blog.csdn.net/DuXing99/article/details/119395126