同学们应该都去麦当劳或肯德基吃过快餐吧？请同学们参考肯德基官网的信息模拟肯德基快餐店的收银系统，合理使用c++/python/java,结合设计模式（2种以上）至少实现系统的以下功能：
1.正常餐品结算和找零。
2.基本套餐结算和找零。
3.使用优惠劵购买餐品结算和找零。
4.可在一定时间段参与店内活动（自行设计或参考官网信息）。
5.模拟打印小票的功能（写到文件中）。
类图：
建立ifood接口实现各类食物信息的打印：
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public interface ifood { /** * 打印输出食物信息 * @return */ string printmesage();} |
抽象类abstractbasefood
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public class abstractbasefood { // 类别 protected string kind; // 数量 protected int num; // 价格 protected float price; //找零 // 合计 public float totalprice() { return this.num * this.price; } } |
各类果汁的基类baverage：
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public abstract class beverage extends abstractbasefood implements ifood{ public string printmesage() { return ("--" + this.kind + "饮料，\t单价：" + this.price + "，\t数量：" + this.num + "，\t合计：" + this.totalprice()); }} |
建立baverage的具体实现类chinabaverage：
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public class chinabeverage extends beverage{ public chinabeverage(int num) { this.kind = "可乐"; this.price = 6.0f; this.num = num; }} |
以此类推分别建立 chickenwing，frenchfries，hamburg抽象类和它们的实现类chinachickenwing,frenchfries,hamburg
建立抽象工厂ikfcfactory：
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public interface ikfcfactory{ // 生产汉堡 public chinahamburg createhamburg(int num); // 生产薯条 public xtx.frenchfries createfrenchfries(int num); // 生产鸡翅 public chinachickenwings createchickenwings(int num); // 生产饮料 public chinabeverage createbeverage(int num);} |
建立ikfcfactory的实现类chinafactory：
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public class chinakfcfactory implements ikfcfactory{ // 生产可乐 public chinabeverage createbeverage(int num) { return new chinabeverage(num); } // 生产奥尔良烤鸡翅 public chinachickenwings createchickenwings(int num) { return new chinachickenwings(num); } // 生产薯条 public chinafrenchfries createfrenchfries(int num) { return new chinafrenchfries(num); } // 生产麻辣风味鸡腿汉堡 public chinahamburg createhamburg(int num) { return new chinahamburg(num); }} |
建立customer类实现食物的选择和文件存储：
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package xtx.factory.custom;import java.io.bufferedwriter;import java.io.filewriter;import java.io.ioexception;import xtx.chinabeverage;import xtx.chinachickenwings;import xtx.chinafrenchfries;import xtx.ikfcfactory;import xtx.chinahamburg;public class customer { // 抽象工厂 private ikfcfactory kfcfactory; // 构造方法将抽象工厂作为参数传入 public customer(ikfcfactory kfcfactory2) { this.kfcfactory = kfcfactory2; } /** * 订购食物 * @throws ioexception */ private string s[] =new string[5]; public void showbill() throws ioexception{ bufferedwriter bw=new bufferedwriter(new filewriter("d://workspace2eclipse//xtx//src//xtx//factory//custom//show.txt",true)); bw.write("---------------------账单如下---------------------"); bw.newline(); for(int i=0;i<5;i++){ bw.write(s[i]); bw.newline(); bw.flush(); } } // 订购麻辣鸡腿汉堡 public float orderhamburg(int num) throws ioexception { // 获得麻辣鸡腿汉堡 chinahamburg hamburg = kfcfactory.createhamburg(num); // 输出订购信息 system.out.print(hamburg.printmesage()); s[0]=hamburg.printmesage(); system.out.print("\n"); // 返回总价 return hamburg.totalprice(); } // 订购奥尔良烤鸡翅 public float orderchickenwings(int num) { // 获得奥尔良烤鸡翅 chinachickenwings chickenwings = kfcfactory.createchickenwings(num); // 输出订购信息 system.out.print(chickenwings.printmesage()); s[1]=chickenwings.printmesage(); system.out.print("\n"); // 返回总价 return chickenwings.totalprice(); } // 订购薯条 public float orderfrenchfries(int num) { // 获得薯条 chinafrenchfries frenchfries = (chinafrenchfries) ((ikfcfactory) kfcfactory).createfrenchfries(num); // 输出订购信息 system.out.print(frenchfries.printmesage()); s[2]=frenchfries.printmesage(); system.out.print("\n"); // 返回总价 return frenchfries.totalprice(); } // 订购可乐 public float orderbeverage(int num) { // 获得可乐 chinabeverage beverage = kfcfactory.createbeverage(num); // 输出订购信息 system.out.print(beverage.printmesage()); s[3]=beverage.printmesage(); system.out.print("\n"); return beverage.totalprice(); } //订购套餐一 public float ordercombo1(int num) { // 获得可乐 chinabeverage beverage = kfcfactory.createbeverage(num); // 获得麻辣鸡腿汉堡 chinahamburg hamburg = kfcfactory.createhamburg(num); s[4]=("--套餐一,\t单价：21,\t数量："+num+"\t\t合计："+(beverage.totalprice()+hamburg.totalprice())+"\n"); system.out.print("--套餐一,\t单价：21,\t数量："+num+"\t\t合计："+(beverage.totalprice()+hamburg.totalprice())+"\n"); return beverage.totalprice()+hamburg.totalprice(); }} |
mainapp：
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package xtx.factory.itf;import java.io.bufferedwriter;import java.io.filewriter;import java.io.ioexception;import java.util.scanner;import xtx.ikfcfactory;import xtx.factory.custom.customer;public class mainapp{ /** * 主应用程序方法 * * @param args * @throws ioexception */ public static void main(string[] args) throws ioexception { /** * 定义一个肯德基（ikfcfactory类型） */ ikfcfactory kfcfactory = (ikfcfactory) new chinakfcfactory(); customer customer = new customer(kfcfactory); /** * 开始点餐 */ // 一个麻辣鸡腿汉堡 scanner in =new scanner(system.in); //system.out.print("请输入付款金额"); system.out.print("-----现有如下产品-----\n"); system.out.print("--麻辣风味汉堡\t单价：15.0.\n--奥尔良风味鸡翅\t单价：3.0\n--普通风味薯条\t单价：8.0\n--可乐饮料\t单价：6.0\n--套餐一（麻辣风味汉堡+可乐饮料）\t单价：21\n"); system.out.print("\n-----------------------"); system.out.print("\n请点餐：\n"); system.out.print("请输入麻辣风味汉堡数量---："); int a1=in.nextint(); system.out.print("请输入奥尔良风味鸡翅数量-："); int a2=in.nextint(); system.out.print("普通入风味薯条数量------："); int a3=in.nextint(); system.out.print("请输入可乐饮料数量------："); int a4=in.nextint(); system.out.print("请输入套餐份数---------："); int a5=in.nextint(); system.out.print("\n------账单如下-----\n"); float hamhurgmoney = customer.orderhamburg(a1); // 四个奥尔良烤鸡翅 float chickenwingsmoney = customer.orderchickenwings(a2); // 一包薯条 float frenchfriesmoney = customer.orderfrenchfries(a3); // 两杯可乐 float beveragemoney = customer.orderbeverage(a4); float combo1=customer.ordercombo1(a5); // float sum=hamhurgmoney + chickenwingsmoney + frenchfriesmoney + beveragemoney+combo1; customer.showbill(); system.out.println("总计：" + (sum)); system.out.print("请输入付款金额:"); int a=in.nextint(); system.out.print("找零："+(a-sum)); customer.showbill(); bufferedwriter bw=new bufferedwriter(new filewriter("d://workspace2eclipse//xtx//src//xtx//factory//custom//show.txt",true)); bw.write("总计: "+sum); bw.newline(); bw.write("付款："+a); bw.newline(); float y=a-sum; bw.write("找零："+y); bw.newline(); bw.flush(); bw.close(); }} |
运行结果展示：
文件存储：
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/Mr__Cat_/article/details/83448749
