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Java实现KFC点餐系统过程解析

【字号: 日期:2022-08-22 14:11:38浏览:4作者:猪猪

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?还郝虿推方崴愫驼伊恪?br>

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:

Java实现KFC点餐系统过程解析

建立IFood接口实现各类食物信息的打印:

public interface IFood { /** * 打印输出食物信息 * @return */ String printMesage(); }

抽象类AbstractBaseFood

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:

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:

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:

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:

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:

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+'tt合计:'+(beverage.totalPrice()+hamburg.totalPrice())+'n'); System.out.print('--套餐一,t单价:21,t数量:'+num+'tt合计:'+(beverage.totalPrice()+hamburg.totalPrice())+'n'); return beverage.totalPrice()+hamburg.totalPrice(); }}

MainApp:

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:3.0n--普通风味薯条t单价:8.0n--可乐饮料t单价:6.0n--套餐一(麻辣风味汉堡+可乐饮料)t单价:21n'); 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:

Java实现KFC点餐系统过程解析

文件存储:

Java实现KFC点餐系统过程解析

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好吧啦网。

标签: Java
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