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java实现KFC点餐系统

程序员文章站 2024-03-01 09:49:22
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...

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:

java实现KFC点餐系统

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:

java实现KFC点餐系统

文件存储:

java实现KFC点餐系统

更多学习资料请关注专题《管理系统开发》。

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