KFC點餐系統作業說明：
思路：用了兩種設計模式，一種是工廠模式，一種是抽象工廠。
工廠模式：用來創建漢堡，飲料對象。
抽象工廠：用來創建套餐。
首先創建一個食物接口，再創建一個漢堡和飲料接口繼承食物接口。
然後創建具體的漢堡類，和飲料類實例化接口。
運用工廠模式創建漢堡和飲料對象。
運行抽象工廠創建套餐對象。
將點餐記錄在文件中，並打印。
類：
抽象工廠：
工廠模式：
運行結果：
public class Function {
/**
* @param args
*/
static double Money(double money,int count)
{
Date dNow = new Date();
SimpleDateFormat ft = new SimpleDateFormat ("hh:mm");
int datecount=10;
try{
Date dt1 = ft.parse("6:00");//將字符串轉換爲date類型
Date dt2 = ft.parse("10:00");
Date dt3=ft.parse(ft.format(dNow));
if(dt3.getTime()>dt1.getTime()&&dt3.getTime()<dt2.getTime())
datecount=8;
}catch(Exception e)
{
e.printStackTrace();
}
return money/10*count/10*datecount;
}
static void write(String str){
try {
FileWriter fw = new FileWriter(new File("D:note.txt"),true);
fw.write(str);
fw.flush();
fw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
double money=0;
Date dNow = new Date();
SimpleDateFormat ft = new SimpleDateFormat ("hh:mm");
System.out.println("當前時間爲: " + ft.format(dNow));
Scanner scanner =new Scanner(System.in);
System.out.println("請您選擇單點或者套餐-----1.單點 2.套餐");
int choose=scanner.nextInt();
if(choose==1){
System.out.println("-----------------------------------");
System.out.println(" 請輸您要選擇的餐品 ");
System.out.println("漢堡系列：1.田園雞腿堡 ￥18 2.香辣雞腿堡 ￥25");
System.out.println("-----------------------------------");
int foodchoose=scanner.nextInt();
System.out.println("-----------------------------------");
System.out.println("請問您要什麼口味的漢堡");
String burgertaste=scanner.next();
System.out.println("-----------------------------------");
System.out.println(" 請選擇您需要點的飲品 ");
System.out.println("飲品系列：1.可樂 ￥10 2.咖啡 ￥15");
int drinkchoose=scanner.nextInt();
System.out.println("-----------------------------------");
System.out.println("請問您要大杯中杯還是小杯");
System.out.println("-----------------------------------");
String drinktype=scanner.next();
//foodchoose drinkchoose分別代表選擇的漢堡和飲品
//您點的餐品：
switch(foodchoose){
case 1:
hamburgerfactory fac1=new PastoralChickenFactory();
PastoralChicken pc=(PastoralChicken)fac1.factoryMethod(burgertaste);
System.out.println(pc);
write(pc.toString());
money=money+18;
break;
case 2:
hamburgerfactory fac2=new SpicyChickenFactory();
SpicyChicken sc=(SpicyChicken)fac2.factoryMethod(burgertaste);
System.out.println(sc);
write(sc.toString());
money=money+25;
break;
default:
System.out.println("沒有此類餐品");
}
switch(drinkchoose){
case 1:
drinksfactory fac1=new ColaFactory();
Cola cola=(Cola)fac1.factoryMethod(drinktype);
System.out.println(cola);
write(cola.toString());
money=money+10;
break;
case 2:
drinksfactory fac2=new CoffeeFactory();
Coffee coffee=(Coffee)fac2.factoryMethod(drinktype);
System.out.println(coffee);
write(coffee.toString());
money=money+15;
break;
default:
System.out.println("沒有此類餐品");
}
System.out.println("請問您有幾折卷");
int count=scanner.nextInt();
System.out.println("您本次一共消費"+Money(money, count));
write("您本次一共消費"+Money(money, count));
}
else if(choose==2)
{
System.out.println("-----------------------------------");
System.out.println(" 請選擇您要點的套餐 ");
System.out.println("套餐A：田園雞腿堡+可樂 價格：￥25");
System.out.println("套餐B 香辣雞腿堡+咖啡 價格：￥45");
System.out.println("1.套餐A 2.套餐B");
System.out.println("-----------------------------------");
int choose2=scanner.nextInt();
switch (choose2) {
case 1:
ConcreteFactoryA fa=new ConcreteFactoryA();
hamburger ham=fa.hamburgerfactory();
drink cl=fa.drinksfactory();
System.out.println(ham);
System.out.println(cl);
write(ham.toString()+" "+cl.toString());
System.out.println("請問您有幾折卷");
int count1=scanner.nextInt();
System.out.println("您本次一共消費"+Money(25, count1));
write("您本次一共消費"+Money(25, count1));
System.out.println("請輸入您的付款金額");
int pay1=scanner.nextInt();
System.out.println("找零："+(pay1-Money(25, count1)));
write("找零："+(pay1-Money(25, count1)));
break;
case 2:
ConcreteFactoryB fa2=new ConcreteFactoryB();
hamburger ham2=fa2.hamburgerfactory();
drink cl2=fa2.drinksfactory();
System.out.println(ham2);
System.out.println(cl2);
write(ham2.toString()+" "+cl2.toString());
System.out.println("請問您有幾折卷");
int count2=scanner.nextInt();
System.out.println("您本次一共消費"+Money(35, count2));
write("您本次一共消費"+Money(35, count2));
System.out.println("請輸入您的付款金額");
int pay2=scanner.nextInt();
System.out.println("找零："+(pay2-Money(25, count2)));
write("找零："+(pay2-Money(25, count2)));
break;
}
}
}
}