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。
原文链接：https://blog.csdn.net/Mr__Cat_/article/details/83448749