java实现KFC点餐系统
2024-10-21 06:37:37
这篇文章主要为大家详细介绍了java实现KFC点餐系统,模拟肯德基快餐店的收银系统,具有一定的参考价值,感兴趣的小伙伴们可以参考一下
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:
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