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java点餐系统 java实现KFC点餐系统

xyj--- 人气:0

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:

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+"\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:

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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