java实现KFC点餐系统

网友投稿 263 2023-01-14


java实现KFC点餐系统

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 newhttp:// 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]=chichttp://kenWings.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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