订餐项目改于2020-09-17
1.数据初始化。
public class chu{ //name=菜名 String[] name = new String[4]; //dishMegs=菜品及份数 String[] dishMegs = new String[4]; //times=送餐时间 int[] times = new int[4]; //addresses=送餐地址 String[] addresses = new String[4]; //states=订单状态 int[] states = new int[4]; //titals=花费的总金额 double[] totals = new double[4]; //实现订餐功能 boolean a; }
2.功能编写
import java.util.Scanner; public class first { Scanner input = new Scanner(System.in); //menu=菜名 String[] menu = {"红烧带鱼", "鱼香肉丝", "时令蔬菜"}; //count=菜品单价 double[] counts = {38.0, 20.0, 10.0}; //zan=点赞数 int[] zans = new int[3]; chu check=new chu(); //实现我要订餐 public boolean add() { boolean isAdd = false; for (int j = 0; j < check.name.length; j++) { if (check.name[j] == null) { isAdd = true; System.out.println("请输入订餐人的姓名："); while (input.hasNextInt()){ System.out.println("请输入正确的名字："); int name=input.nextInt(); } //name=订餐人的姓名 String name = input.next(); System.out.println("序号 菜名 单价 点赞数"); for (int i = 0; i < menu.length; i++) { String count = counts[i] + "元"; String zan = (zans[i]) > 0 ? zans[i] + " " + "赞" : "0"; System.out.println((i + 1) + " " + menu[i] + " " + count + " " + zan); } System.out.println("请选择您要点的菜品编号："); while (!input.hasNextInt()){ System.out.println("请输入正确的数字："); String gun=input.next(); } //choose=要点的菜品编号 int choose = input.nextInt(); while (choose < 0 || choose > 3) { System.out.println("输入错误，请输入1至3之间的数"); choose = input.nextInt(); } System.out.println("请选择您需要的份数(餐费超过50元会免费配送的哟！)："); while (!input.hasNextInt()){ System.out.println("请输入正确的数字(餐费超过50元会免费配送的哟！)："); String number=input.next(); } //fen=菜品的份数 int fen = input.nextInt(); if (0>fen||fen>200){ System.out.println("对不起，我们没有那么多原材料，请重新预订："); add(); } String dishMeg = menu[choose - 1] + "" + fen + "份"; double sum = counts[choose - 1] * fen; //deliCharge=送餐费，如果没够50加付5元，满足50或超过50则不需要付送餐费 double deliCharge = (sum >= 50) ? 0 : 5; double total = sum + deliCharge; System.out.println("请输入送餐时间（送餐时间是10点至20点整点送餐）："); int time = input.nextInt(); while (time < 10 || time > 20) { System.out.println("抱歉，我们的送餐时间是10点到20点，请重新选择："); time = input.nextInt(); } System.out.println("请输入送餐地址："); String address = input.next(); String regex = "[u4E00-u9FA5]+"; while (!(address.matches(regex))){ System.out.println("请输入正确的地址："); address=input.next(); } System.out.println("订餐成功！"); System.out.println("您订的是：" + dishMeg); System.out.println("送餐时间：" + time+"点"); System.out.println("餐费：" + sum + "元，送餐费" + deliCharge + "元，总计：" + total + "元"); check.name[j] = name; check.dishMegs[j] = dishMeg; check.times[j] = time; check.addresses[j] = address; check.totals[j] = total; break; } } if (!isAdd) { System.out.println("对不起，您的订单已满！"); return isAdd; } else { return isAdd; } } //实现查看餐袋 public void checks() { System.out.println("序号 订餐人姓名 餐品信息 送餐时间 送餐地址 总金额 订单状态"); for (int i = 0; i < check.name.length; i++) { if (check.name[i]!=null){ String state = (check.states[i] == 0) ? "已预定" : "已完成"; String date = check.times[i] + "点"; String total = check.totals[i] + "元"; System.out.println((i + 1) + " " + check.name[i] + " " + check.dishMegs[i] + " " + date + " " + check.addresses[i] + " " + total + " " + state); } } } //实现签收订单 public void sign(){ boolean isBig=false; System.out.println("请选择要签收的订单编号："); while (!(input.hasNextInt())){ System.out.println("请输入正确的数字："); String digit = input.next(); } int number=input.nextInt(); for (int i=0;i<check.name.length;i++){ if (check.name[i]!=null&&check.states[i]==0&&number==i+1){ check.states[i]=1; System.out.println("订单签收成功！"); isBig=true; }else if (check.name[i]!=null&&check.states[i]==1&&number==i+1){ System.out.println("您选择的菜单已完成签收，不能再次签收！"); isBig=true; } } if (!isBig){ System.out.println("您选择的订单不存在！"); } } //实现删除订单 public void delete(){ boolean isSmall=false; System.out.println("请输入要删除的订单编号："); while (!(input.hasNextInt())){ System.out.println("请输入数字："); String figure=input.next(); } int nums=input.nextInt(); for (int i=0;i<check.name.length;i++){ if (check.name[i]!=null&&check.states[i]==1&&nums==i+1){ isSmall=true; for (int j=nums-1;j<check.name.length-1;j++){ check.name[j]=check.name[j+1]; check.dishMegs[j]=check.dishMegs[j+1]; check.times[j]=check.times[j+1]; check.addresses[j]=check.addresses[j+1]; check.states[j]=check.states[j+1]; check.totals[j]=check.totals[j+1]; } int endIndex=check.name.length-1; check.name[endIndex]=null; check.dishMegs[endIndex]=null; check.times[endIndex]=0; check.addresses[endIndex]=null; check.states[endIndex]=0; check.totals[endIndex]=0; System.out.println("删除订单成功！"); break; }else if (check.name[i]!=null&&check.states[i]==0&&nums==i+1){ System.out.println("您选择的订单未签收，不能删除！"); isSmall=true; break; } } if (!isSmall){ System.out.println("您要删除的订单不存在！"); } } //实现点赞功能 public void praise(){ System.out.println("序号"+" "+"菜名"+" "+"单价"); for (int i=0;i<menu.length;i++){ String price=counts[i]+"元"; String priceNum=(zans[i])>0?zans[i]+"赞":""; System.out.println((i+1)+" "+menu[i]+" "+price+" "+priceNum); } System.out.println("请选择您要点赞的菜品序号："); while (!(input.hasNextInt())){ System.out.println("请输入正确的数字："); String digitial=input.next(); } int praiseNum=input.nextInt(); if (praiseNum>=3){ int num; do { System.out.println("对不起,输入不符合规范请重新输入："); num=input.nextInt(); }while (num>3); }else { zans[praiseNum-1]++; System.out.println("点赞成功！"); } } //实现满意程度调查 public void satisfaction(){ System.out.println("满意程度："); while (!input.hasNextInt()){ System.out.println("请输入1到3的数字哦！"); String num=input.next(); } int du=input.nextInt(); switch (du){ case 1: System.out.println("不满意"); System.out.println("对不起，给亲带来了不便请见谅！我们还会继续努力的(≖ᴗ≖)✧"); break; case 2: System.out.println("还行吧"); System.out.println("谢谢亲的评价！(๑*◡*๑)"); break; case 3: System.out.println("非常满意"); System.out.println("感谢亲的好评，我们会继续努力的！ヾ(^Д^*)/"); break; default: System.out.print("您的输入不符合规范哦！"); satisfaction(); } } //实现幸运免单 public void lucky(){ System.out.println("欢迎参与我们的幸运免单，你会是那个幸运的人吗？"); System.out.println("请随机选取一个“四位数”哦："); while (!input.hasNextInt()){ System.out.println("请输入正确的四位数哦："); String digit=input.next(); } int num=input.nextInt(); int max=9999; int min=1000; int cardNumber=(int)(Math.random()*(max-min)+min); if (!(num==cardNumber)){ System.out.println("对不起，亲不是我们的幸运用户哦！"); }else { System.out.println("恭喜亲成功免单！(◕ᴗ◕✿)"); } } }
3.测试类。
import java.util.Scanner; public class eating { public static void main(String[] args) { boolean isBig=false; int bum; boolean a=false; first check=new first(); 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 2.查看餐袋 3.签收订单 4.删除订单 5.幸运免单 6.我要点赞 7.满意程度 8.退出系统"); System.out.println("********************************************************"); System.out.println("请选择："); Scanner input=new Scanner(System.in); while (!input.hasNextInt()){ System.out.println("输入有误，请重新输入："); String xum=input.next(); } int num=input.nextInt(); switch (num){ case 1: System.out.println("****我要订餐****"); a=check.add(); break; case 2: System.out.println("****查看餐袋****"); if (a) { check.checks(); } break; case 3: System.out.println("****签收订单****"); check.sign(); break; case 4: System.out.println("****删除订单****"); check.delete(); break; case 5: System.out.println("****幸运免单****"); if (a) { check.lucky(); }else { System.out.println("您没有参与活动的权限，请先订单！"); } break; case 6: System.out.println("****我要点赞****"); check.praise(); break; case 7: System.out.println("1.不满意 2.还行吧 3.非常满意"); check.satisfaction(); break; case 8: isBig=true; break; default: System.out.print("输入有误！"); } if (!isBig){ System.out.println("按0返回系统（其他均退出系统）："); bum=input.nextInt(); }else { break; } }while (bum==0); System.out.println("谢谢使用，欢迎下次光临！"); } }
自己做的一个小项目，总之还是挺满意的。