java作業練習4:KFC前臺訂餐系統（版本1）
阿新 • • 發佈：2018-12-17
作業題目：KFC前臺訂餐系統（版本1)
所用語言：java
所用類：
其他檔案：bills.txt
程式介紹：使用者根據目前電腦時段選擇早餐，正餐，宵夜的不同選單，使用者只能在這個範圍內點餐，每次加餐會更新顧客的選單最後輸入給的錢自動找零。將“發票”儲存至bills.txt中，整個類的設計過程採用了簡單工廠模式和單例模式。程式碼如下：
import KFCMenus.BreakfastMenu; import KFCMenus.LateNightSnacksMenu; import KFCMenus.Menu; import KFCMenus.RegularMealsMenu; import java.io.BufferedWriter; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.*; import java.util.List; public class Main { public static void main(String[] args) throws IOException { System.out.println("------\\(˙<>˙)/------"); System.out.println("!!!!Welcome to KFC!!!!"); SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//設定日期格式 System.out.println("Current time is:" + df.format(new Date()));// new Date()為獲取當前系統時間 Calendar cal = Calendar.getInstance(); int hour = cal.get(Calendar.HOUR_OF_DAY); Menu menu; if (hour >= 6 && hour < 8) { System.out.print("＞▽＜早上好!這是您的早餐選單哦！"); menu = BreakfastMenu.getInstance(); Frame(menu); } else if (hour >= 8 && hour < 11 || hour >= 11 && hour < 13 || hour >= 13 && hour < 18) { if (hour >= 8 && hour < 11) System.out.println("上午好"); if (hour >= 11 && hour < 13) System.out.println("中午好"); if (hour >= 13 && hour < 18) System.out.println("下午好"); System.out.println("＞▽＜這是您的主食選單！"); menu = RegularMealsMenu.getInstance(); Frame(menu); } else { System.out.println("晚上好(－_－)ｚＺ,夜宵選單給你看~"); menu = LateNightSnacksMenu.getInstance(); Frame(menu); } } public static void Frame(Menu menu) throws IOException { Set<String> foodSet = menu.menu.keySet();//set中無法取出某個制定的元素，所以將其轉換成List List<String> foodlist = new ArrayList<String>(foodSet); System.out.println("[email protected]@[email protected]@[email protected]@"); for (int i = 0; i < foodlist.size(); i++) { System.out.println((i + 1) + foodlist.get(i)); } System.out.println("[email protected]@[email protected]@[email protected]@"); Scanner sc = new Scanner(System.in); boolean flag = true; System.out.println("想吃什麼嘞？ －▽－ｙ"); float totalPrice = 0; Map<String, Float> orderList = new HashMap<>(); while (flag) { switch (sc.nextInt()) { case 1: orderList.put(foodlist.get(0), menu.getMenu().get(foodlist.get(0))); totalPrice += menu.getMenu().get(foodlist.get(0)); break; case 2: orderList.put(foodlist.get(1), menu.getMenu().get(foodlist.get(1))); totalPrice += menu.getMenu().get(foodlist.get(1)); break; case 3: orderList.put(foodlist.get(2), menu.getMenu().get(foodlist.get(2))); totalPrice += menu.getMenu().get(foodlist.get(2)); break; case 0: flag=false; break; } System.out.println("已點:" + orderList + "總價：" + totalPrice + "就這些嗎？ <(‵▽′)> (按0結束按其他鍵繼續)"); } System.out.println("KFC*KFC*KFC*KFC*KFC*KFC*KFC*KFC*KFC*KFC*KFC*KFC*KFC*"); System.out.println("這是您的選單！請過目：" + orderList + "總價：" + totalPrice + "請給現金(/><)/"); System.out.println("KFC*KFC*KFC*KFC*KFC*KFC*KFC*KFC*KFC*KFC*KFC*KFC*KFC*"); float money = 0; do { money = sc.nextFloat(); if (money < totalPrice) { System.out.println("沒給夠哦！⊙ . ⊙"); } } while (money < totalPrice); System.out.println("收現金：" + money + "找零：" + (money - totalPrice) + "發票已列印 ≧ω≦"); File f = new File("E:/Java Projects/Homework4/src/file/bills"); FileWriter fw = new FileWriter(f); BufferedWriter bw = new BufferedWriter(fw); bw.write("食品：" + String.valueOf(orderList) + "總價" + totalPrice + "\t"); bw.flush(); } }
main類
package Foods;
//使用簡單的工廠模式生成各種食品
public interface Food {
void setPirce(float p);
float getPrice();
String getName();
}
Foods介面，用於建立工程
package Foods; public class FoodFactory { public Food getFood(String name){ if(name=="null") { System.out.println("there isn't this name ,≡(▔﹏▔)≡"); return null; } if(name.equalsIgnoreCase("冰淇淋")){ return new IceCream(); } else if(name.equalsIgnoreCase("嫩牛五方")){ return new BeefRoulade(); } else if(name.equalsIgnoreCase("薯條")){ return new FrenchFries(); }else if(name.equalsIgnoreCase("香辣雞腿堡")){ return new ZingerBurger(); }else if(name.equalsIgnoreCase("可樂")){ return new Cola(); } return null; } }
工廠類
所有食物類：
package Foods;
public class BeefRoulade extends FoodInfo implements Food{
public BeefRoulade(){
price=15;
name="嫩牛五方";
}
@Override
public void setPirce(float p) {
this.price=p;
}
@Override
public float getPrice() {
return price;
}
@Override
public String getName() {
return name;
}
}
package Foods;
public class Cola extends FoodInfo implements Food {
public Cola(){
price=12;
name="可樂";
}
@Override
public void setPirce(float p) {
this.price=p;
}
@Override
public float getPrice() {
return this.price;
}
@Override
public String getName() {
return name;
}
}
package Foods;
public class FrenchFries extends FoodInfo implements Food {
public FrenchFries() {
price= 19;
name = "薯條";
}
@Override
public void setPirce(float p) {
this.price=p;
}
@Override
public float getPrice() {
return this.price;
}
@Override
public String getName() {
return name;
}
}
package Foods;
public class IceCream extends FoodInfo implements Food {
public IceCream(){
price=9;
name="冰淇淋";
}
@Override
public void setPirce(float p) {
this.price=p;
}
@Override
public float getPrice() {
return this.price;
}
@Override
public String getName() {
return name;
}
}
package Foods;
public class ZingerBurger extends FoodInfo implements Food{
public ZingerBurger(){
price=20;
name="香辣雞腿堡";
}
@Override
public void setPirce(float p) {
this.price=p;
}
@Override
public float getPrice() {
return this.price;
}
@Override
public String getName() {
return name;
}
}
結束後的bills:
Coder:Flyige