本文實例為大家分享了java實現小超市程序的具體代碼，供大家參考，具體內容如下

1.顧客類

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

1.小超市類

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

2.商品類

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) { //通過小超市類創建超市實體 LittleSuperMarket littleSuperMarket = new LittleSuperMarket(); //為超市屬性賦值 littleSuperMarket.address = '世紀大道999號'; littleSuperMarket.superMarketName = '我家超市'; littleSuperMarket.parkingCount = 200; //為超市商品屬性new一個大小為200的數組，類型為Merchandise littleSuperMarket.merchandises = new Merchandise[200]; //創造下標相同的數組記錄相同下標商品的賣出個數 littleSuperMarket.merchandisesold = new int[littleSuperMarket.merchandises.length]; //賦值 for (int i = 0; i < littleSuperMarket.merchandises.length; i++) { //創建類型為merchandise的局部變量m，并為其賦值 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; //將每次局部變量的值賦給對應下標的merchandise實體，此時實體merchandise有了值 littleSuperMarket.merchandises[i] = m; } System.out.println('超市開張了！! ！'); 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('共擁有停車位：' + littleSuperMarket.parkingCount); System.out.println('今天的營業額為：' + littleSuperMarket.incomingSum); System.out.println('共有商品：' + littleSuperMarket.merchandises.length + '種'); //為顧客的屬性賦值 Customer customer = new Customer(); customer.name = '編號：' + ((int) (Math.random() * 500)); customer.isDrivingCar = Math.random() > 0.4; customer.money = (1 + Math.random()) * 10000; //先判斷顧客是否開車 if (customer.isDrivingCar) { System.out.println('歡迎顧客' + customer.name + '號的顧客駕車而來！'); //顧客開車的條件下車位數>0，車位減一，否則重新進入循環（車位小于零，顧客無法停車） if (littleSuperMarket.parkingCount > 0) { littleSuperMarket.parkingCount--; System.out.println('歡迎顧客' + customer.name + '號的顧客光臨' + littleSuperMarket.superMarketName + ',車位剩余' + littleSuperMarket.parkingCount + '，錢包剩余' + customer.money); } else { System.out.println('對不起，停車位已滿，歡迎下次光臨'); continue; } //沒開車，直接進入 } else { System.out.println('歡迎顧客' + customer.name + '號的顧客光臨' + littleSuperMarket.superMarketName + '錢包剩余' + customer.money); } //在購買流程外部創建變量統計總共花費和購買數量 double totalCast = 0; int numToBuy; //購買循環 while (true) { System.out.println('本店提供' + littleSuperMarket.merchandises.length + '種商品，歡迎選購。請輸入商品編號:'); int InDex = scanner.nextInt(); //對商品索引的合法性進行檢測 if (InDex <= 0) { break; } if (InDex > littleSuperMarket.merchandises.length - 1) { System.out.println('對不起，本店沒有那么多商品。請輸入0到' + (littleSuperMarket.merchandises.length - 1) + '之間的數字'); continue; } System.out.println('您選購的商品的名字是:' + littleSuperMarket.merchandises[InDex].name + 't售價為：' + littleSuperMarket.merchandises[InDex].soldPrice); System.out.println('請問你要買幾個？'); numToBuy = scanner.nextInt(); //對購買數量的合法性進行檢測 if (numToBuy <= 0) { System.out.println('不買看看也好，歡迎繼續選購'); continue; } if (numToBuy > littleSuperMarket.merchandises[InDex].count) { System.out.println('本店沒有那么多商品，歡迎繼續挑選'); continue; } /*其實這里的邏輯不太好，但是懶得改了，等再學習一段時間再好好完善這個小程序。這里把花費放在購買循環外面才是比較好的邏輯，然后在這里用if循環判斷購買的一系列合法性即可。 或者把售賣個數的屬性也在這里改變賦值會容易懂，我這里放到后面了，懶得改了。等下次優化功能時再整體優化邏輯 */ //輸入合法，求總共花費，并對商品庫存進行相應的扣除 totalCast += littleSuperMarket.merchandises[InDex].soldPrice * numToBuy; littleSuperMarket.merchandises[InDex].count -= numToBuy; //仍然屬于合法性檢測，檢測顧客的錢是否夠支付他所購買商品的總價 if (customer.money < totalCast) { System.out.println('對不起，您身上的錢不足以支付您的商品，歡迎下次選購'); //錢不足以支付，對應商品的數量再把剛才購買但未成功支付的商品數量歸還 //就像你在超市里買東西，放進購物車了，貨架上超市庫存少了，其他顧客拿不到了，等你支付時錢不夠，商品被放回，其他顧客可以拿到的數量增加，即商品庫存增加 littleSuperMarket.merchandises[InDex].count += numToBuy; //這一段當時寫的時候我也比較亂 //因為總價計算在外面了，此時總價已將超出了你的錢數循環從這里出去如果總價不置零，你的錢數一直小于總價，該顧客一直無法購買商品 totalCast = 0; } else { //正確購買，售出數量對應增加，顧客口袋里的錢對應減少 littleSuperMarket.merchandisesold[InDex] += numToBuy; customer.money -= totalCast; //開車來的話，顧客離開，車位釋放 if (customer.isDrivingCar) { littleSuperMarket.parkingCount++; } } } littleSuperMarket.incomingSum += totalCast; //每次循環結束，該人總錢數得出將該人的totalCast累加到littleSuperMarket.incomingSum中，得出總共收入 //littleSuperMarket.incomingSum和totalIncoming數值相等，基本為同一意思 //littleSuperMarket.incomingSum += totalCast; System.out.println('顧客' + customer.name + '號的顧客共消費' + totalCast + '，還剩余' + customer.money); System.out.println('今天還要繼續營業嗎？'); open = scanner.nextBoolean(); } System.out.println('超市關門了！'); System.out.println('今天總的營業額為' + littleSuperMarket.incomingSum + '營業情況如下：'); //定義總收入和總凈利潤 double totalNetIncoming = 0; double totalIncoming = 0; for (int i = 0; i < littleSuperMarket.merchandisesold.length; i++) { //只統計售出數量大于0的商品 if (littleSuperMarket.merchandisesold[i] > 0) { //計算總利潤和總凈利潤，通過累加求得 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] + '個。銷售額為' + incoming + ',凈利潤為' + netIncoming); } } System.out.println('今日總銷售額為：' + totalIncoming + ';今日總凈利潤為：' + totalNetIncoming); }}

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持好吧啦網。