java實現KFC點餐系統
阿新 • • 發佈:2020-10-07
這篇文章主要為大家詳細介紹了java實現KFC點餐系統,模擬肯德基快餐店的收銀系統,具有一定的參考價值,感興趣的小夥伴們可以參考一下
同學們應該都去麥當勞或肯德基吃過快餐吧?請同學們參考肯德基官網的資訊模擬肯德基快餐店的收銀系統,合理使用C++/python/Java,結合設計模式(2種以上)至少實現系統的以下功能:
1.正常餐品結算和找零。
2.基本套餐結算和找零。
3.使用優惠劵購買餐品結算和找零。
4.可在一定時間段參與店內活動(自行設計或參考官網資訊)。
5.模擬列印小票的功能(寫到檔案中)。
類圖:
建立IFood介面實現各類食物資訊的列印:
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public interface IFood {
/**
* 列印輸出食物資訊
* @return
*/
String printMesage();
}
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抽象類AbstractBaseFood
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public class AbstractBaseFood {
// 類別
protected String kind;
// 數量
protected int num;
// 價格
protected float price;
//找零
// 合計
public float totalPrice()
{
return this .num * this .price;
}
}
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各類果汁的基類Baverage:
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public abstract class Beverage extends AbstractBaseFood implements IFood
{
public String printMesage()
{
return ( "--" + this .kind + "飲料,\t單價:" + this .price + ",\t數量:" + this .num + ",\t合計:" + this .totalPrice());
}
}
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建立Baverage的具體實現類ChinaBaverage:
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public class ChinaBeverage extends Beverage
{
public ChinaBeverage( int num)
{
this .kind = "可樂" ;
this .price = 6 .0f;
this .num = num;
}
}
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以此類推分別建立 ChickenWing,FrenchFries,Hamburg抽象類和它們的實現類ChinaChickenWing,FrenchFries,Hamburg
建立抽象工廠IKfcFactory:
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public interface IKfcFactory
{
// 生產漢堡
public ChinaHamburg createHamburg( int num);
// 生產薯條
public xtx.FrenchFries createFrenchFries( int num);
// 生產雞翅
public ChinaChickenWings createChickenWings( int num);
// 生產飲料
public ChinaBeverage createBeverage( int num);
}
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建立IKfcFactory的實現類ChinaFactory:
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public class ChinaKfcFactory implements IKfcFactory
{
// 生產可樂
public ChinaBeverage createBeverage( int num)
{
return new ChinaBeverage(num);
}
// 生產奧爾良烤雞翅
public ChinaChickenWings createChickenWings( int num)
{
return new ChinaChickenWings(num);
}
// 生產薯條
public ChinaFrenchFries createFrenchFries( int num)
{
return new ChinaFrenchFries(num);
}
// 生產麻辣風味雞腿漢堡
public ChinaHamburg createHamburg( int num)
{
return new ChinaHamburg(num);
}
}
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建立Customer類實現食物的選擇和檔案儲存:
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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
{
// 抽象工廠
private IKfcFactory kfcFactory;
// 構造方法將抽象工廠作為引數傳入
public Customer(IKfcFactory kfcFactory2)
{
this .kfcFactory = kfcFactory2;
}
/**
* 訂購食物
* @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( "---------------------賬單如下---------------------" );
bw.newLine();
for ( int i= 0 ;i< 5 ;i++){
bw.write(s[i]);
bw.newLine();
bw.flush();
}
}
// 訂購麻辣雞腿漢堡
public float orderHamburg( int num) throws IOException
{
// 獲得麻辣雞腿漢堡
ChinaHamburg hamburg = kfcFactory.createHamburg(num);
// 輸出訂購資訊
System.out.print(hamburg.printMesage());
s[ 0 ]=hamburg.printMesage();
System.out.print( "\n" );
// 返回總價
return hamburg.totalPrice();
}
// 訂購奧爾良烤雞翅
public float orderChickenWings( int num)
{
// 獲得奧爾良烤雞翅
ChinaChickenWings chickenWings = kfcFactory.createChickenWings(num);
// 輸出訂購資訊
System.out.print(chickenWings.printMesage());
s[ 1 ]=chickenWings.printMesage();
System.out.print( "\n" );
// 返回總價
return chickenWings.totalPrice();
}
// 訂購薯條
public float orderFrenchFries( int num)
{
// 獲得薯條
ChinaFrenchFries frenchFries = (ChinaFrenchFries) ((IKfcFactory) kfcFactory).createFrenchFries(num);
// 輸出訂購資訊
System.out.print(frenchFries.printMesage());
s[ 2 ]=frenchFries.printMesage();
System.out.print( "\n" );
// 返回總價
return frenchFries.totalPrice();
}
// 訂購可樂
public float orderBeverage( int num)
{
// 獲得可樂
ChinaBeverage beverage = kfcFactory.createBeverage(num);
// 輸出訂購資訊
System.out.print(beverage.printMesage());
s[ 3 ]=beverage.printMesage();
System.out.print( "\n" );
return beverage.totalPrice();
}
//訂購套餐一
public float ordercombo1( int num)
{
// 獲得可樂
ChinaBeverage beverage = kfcFactory.createBeverage(num);
// 獲得麻辣雞腿漢堡
ChinaHamburg hamburg = kfcFactory.createHamburg(num);
s[ 4 ]=( "--套餐一,\t單價:21,\t數量:" +num+ "\t\t合計:" +(beverage.totalPrice()+hamburg.totalPrice())+ "\n" );
System.out.print( "--套餐一,\t單價:21,\t數量:" +num+ "\t\t合計:" +(beverage.totalPrice()+hamburg.totalPrice())+ "\n" );
return beverage.totalPrice()+hamburg.totalPrice();
}
}
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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
{
/**
* 主應用程式方法
*
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException
{
/**
* 定義一個肯德基(IKfcFactory型別)
*/
IKfcFactory kfcFactory = (IKfcFactory) new ChinaKfcFactory();
Customer customer = new Customer(kfcFactory);
/**
* 開始點餐
*/
// 一個麻辣雞腿漢堡
Scanner in = new Scanner(System.in);
//System.out.print("請輸入付款金額");
System.out.print( "-----現有如下產品-----\n" );
System.out.print( "--麻辣風味漢堡\t單價:15.0.\n--奧爾良風味雞翅\t單價:3.0\n--普通風味薯條\t單價:8.0\n--可樂飲料\t單價:6.0\n--套餐一(麻辣風味漢堡+可樂飲料)\t單價:21\n" );
System.out.print( "\n-----------------------" );
System.out.print( "\n請點餐:\n" );
System.out.print( "請輸入麻辣風味漢堡數量---:" );
int a1=in.nextInt();
System.out.print( "請輸入奧爾良風味雞翅數量-:" );
int a2=in.nextInt();
System.out.print( "普通入風味薯條數量------:" );
int a3=in.nextInt();
System.out.print( "請輸入可樂飲料數量------:" );
int a4=in.nextInt();
System.out.print( "請輸入套餐份數---------:" );
int a5=in.nextInt();
System.out.print( "\n------賬單如下-----\n" );
float hamhurgMoney = customer.orderHamburg(a1);
// 四個奧爾良烤雞翅
float chickenWingsMoney = customer.orderChickenWings(a2);
// 一包薯條
float frenchFriesMoney = customer.orderFrenchFries(a3);
// 兩杯可樂
float beverageMoney = customer.orderBeverage(a4);
float combo1=customer.ordercombo1(a5);
//
float sum=hamhurgMoney + chickenWingsMoney + frenchFriesMoney + beverageMoney+combo1;
customer.showbill();
System.out.println( "總計:" + (sum));
System.out.print( "請輸入付款金額:" );
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( "總計: " +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();
}
}
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執行結果展示:
檔案儲存: