java实现简单的小超市程序

本文实例为大家分享了java实现小超市程序的具体代码，供大家参考，具体内容如下

1.顾客类

package person;public class Customer { public String name; public double money; public boolean isDrivingCar;}二.超市包

1.小超市类

package supermarket;public class LittleSuperMarket { public String superMarketName; public String address; public int parkingCount; public double incomingSum; public Merchandise[] merchandises; public int[] merchandisesold;}

2.商品类

package supermarket;public class Merchandise { public String name; public String id; public int count; public double soldPrice; public double purchasePrice;}三.主程序

import person.Customer;import supermarket.LittleSuperMarket;import supermarket.Merchandise;import java.util.Scanner;public class Run { public static void main(String[] args) { //通过小超市类创建超市实体 LittleSuperMarket littleSuperMarket = new LittleSuperMarket(); //为超市属性赋值 littleSuperMarket.address = '世纪大道999号'; littleSuperMarket.superMarketName = '我家超市'; littleSuperMarket.parkingCount = 200; //为超市商品属性new一个大小为200的数组，类型为Merchandise littleSuperMarket.merchandises = new Merchandise[200]; //创造下标相同的数组记录相同下标商品的卖出个数 littleSuperMarket.merchandisesold = new int[littleSuperMarket.merchandises.length]; //赋值 for (int i = 0; i < littleSuperMarket.merchandises.length; i++) { //创建类型为merchandise的局部变量m，并为其赋值 Merchandise m = new Merchandise(); m.count = 200; m. + i; m.name = '商品' + i; m.purchasePrice = 200 * Math.random(); m.soldPrice = (1 + Math.random()) * m.purchasePrice; //将每次局部变量的值赋给对应下标的merchandise实体，此时实体merchandise有了值 littleSuperMarket.merchandises[i] = m; } System.out.println('超市开张了！! ！'); boolean open = true; Scanner scanner = new Scanner(System.in); while (open) { System.out.println('本店叫做：' + littleSuperMarket.superMarketName); System.out.println('本店地址：' + littleSuperMarket.address); System.out.println('共拥有停车位：' + littleSuperMarket.parkingCount); System.out.println('今天的营业额为：' + littleSuperMarket.incomingSum); System.out.println('共有商品：' + littleSuperMarket.merchandises.length + '种'); //为顾客的属性赋值 Customer customer = new Customer(); customer.name = '编号：' + ((int) (Math.random() * 500)); customer.isDrivingCar = Math.random() > 0.4; customer.money = (1 + Math.random()) * 10000; //先判断顾客是否开车 if (customer.isDrivingCar) { System.out.println('欢迎顾客' + customer.name + '号的顾客驾车而来！'); //顾客开车的条件下车位数>0，车位减一，否则重新进入循环（车位小于零，顾客无法停车） if (littleSuperMarket.parkingCount > 0) { littleSuperMarket.parkingCount--; System.out.println('欢迎顾客' + customer.name + '号的顾客光临' + littleSuperMarket.superMarketName + ',车位剩余' + littleSuperMarket.parkingCount + '，钱包剩余' + customer.money); } else { System.out.println('对不起，停车位已满，欢迎下次光临'); continue; } //没开车，直接进入 } else { System.out.println('欢迎顾客' + customer.name + '号的顾客光临' + littleSuperMarket.superMarketName + '钱包剩余' + customer.money); } //在购买流程外部创建变量统计总共花费和购买数量 double totalCast = 0; int numToBuy; //购买循环 while (true) { System.out.println('本店提供' + littleSuperMarket.merchandises.length + '种商品，欢迎选购。请输入商品编号:'); int InDex = scanner.nextInt(); //对商品索引的合法性进行检测 if (InDex <= 0) { break; } if (InDex > littleSuperMarket.merchandises.length - 1) { System.out.println('对不起，本店没有那么多商品。请输入0到' + (littleSuperMarket.merchandises.length - 1) + '之间的数字'); continue; } System.out.println('您选购的商品的名字是:' + littleSuperMarket.merchandises[InDex].name + 't售价为：' + littleSuperMarket.merchandises[InDex].soldPrice); System.out.println('请问你要买几个？'); numToBuy = scanner.nextInt(); //对购买数量的合法性进行检测 if (numToBuy <= 0) { System.out.println('不买看看也好，欢迎继续选购'); continue; } if (numToBuy > littleSuperMarket.merchandises[InDex].count) { System.out.println('本店没有那么多商品，欢迎继续挑选'); continue; } /*其实这里的逻辑不太好，但是懒得改了，等再学习一段时间再好好完善这个小程序。这里把花费放在购买循环外面才是比较好的逻辑，然后在这里用if循环判断购买的一系列合法性即可。 或者把售卖个数的属性也在这里改变赋值会容易懂，我这里放到后面了，懒得改了。等下次优化功能时再整体优化逻辑 */ //输入合法，求总共花费，并对商品库存进行相应的扣除 totalCast += littleSuperMarket.merchandises[InDex].soldPrice * numToBuy; littleSuperMarket.merchandises[InDex].count -= numToBuy; //仍然属于合法性检测，检测顾客的钱是否够支付他所购买商品的总价 if (customer.money < totalCast) { System.out.println('对不起，您身上的钱不足以支付您的商品，欢迎下次选购'); //钱不足以支付，对应商品的数量再把刚才购买但未成功支付的商品数量归还 //就像你在超市里买东西，放进购物车了，货架上超市库存少了，其他顾客拿不到了，等你支付时钱不够，商品被放回，其他顾客可以拿到的数量增加，即商品库存增加 littleSuperMarket.merchandises[InDex].count += numToBuy; //这一段当时写的时候我也比较乱 //因为总价计算在外面了，此时总价已将超出了你的钱数循环从这里出去如果总价不置零，你的钱数一直小于总价，该顾客一直无法购买商品 totalCast = 0; } else { //正确购买，售出数量对应增加，顾客口袋里的钱对应减少 littleSuperMarket.merchandisesold[InDex] += numToBuy; customer.money -= totalCast; //开车来的话，顾客离开，车位释放 if (customer.isDrivingCar) { littleSuperMarket.parkingCount++; } } } littleSuperMarket.incomingSum += totalCast; //每次循环结束，该人总钱数得出将该人的totalCast累加到littleSuperMarket.incomingSum中，得出总共收入 //littleSuperMarket.incomingSum和totalIncoming数值相等，基本为同一意思 //littleSuperMarket.incomingSum += totalCast; System.out.println('顾客' + customer.name + '号的顾客共消费' + totalCast + '，还剩余' + customer.money); System.out.println('今天还要继续营业吗？'); open = scanner.nextBoolean(); } System.out.println('超市关门了！'); System.out.println('今天总的营业额为' + littleSuperMarket.incomingSum + '营业情况如下：'); //定义总收入和总净利润 double totalNetIncoming = 0; double totalIncoming = 0; for (int i = 0; i < littleSuperMarket.merchandisesold.length; i++) { //只统计售出数量大于0的商品 if (littleSuperMarket.merchandisesold[i] > 0) { //计算总利润和总净利润，通过累加求得 double incoming = littleSuperMarket.merchandises[i].soldPrice * littleSuperMarket.merchandisesold[i]; double netIncoming = (littleSuperMarket.merchandises[i].soldPrice - littleSuperMarket.merchandises[i].purchasePrice) * littleSuperMarket.merchandisesold[i]; totalIncoming += incoming; totalNetIncoming += netIncoming; System.out.println(littleSuperMarket.merchandises[i].name + '售出了' + littleSuperMarket.merchandisesold[i] + '个。销售额为' + incoming + ',净利润为' + netIncoming); } } System.out.println('今日总销售额为：' + totalIncoming + ';今日总净利润为：' + totalNetIncoming); }}

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