/* TQC+ JAVA6 - 608_1 */

//建立抽象的食物類別
abstract class Food{
	int amount;
	int calorie;
	//建構子初始化份量
	Food(int i){
		amount=i;
	}
	//建立設定卡洛里方法
	void setCaloriePerGram(int i){
		calorie=i;
	}
	//建立取得份量的方法
	int getAmount(){
		return amount;
	}
	//建立取得份量的抽象方法，待繼承者去實作
	abstract int getCalorie();
}
//繼承食物
class Rice extends Food{
	Rice(int i){
		super(i);
		calorie=1;
	}
	int getCalorie(){
		return getAmount()*calorie;
	}
}
//繼承食物
class Egg extends Food{
	Egg(int i){
		super(i);
		calorie=2;
	}
	int getCalorie(){
		return getAmount()*calorie;
	}
}
//繼承食物
class Cabbage extends Food{
	Cabbage(int i){
		super(i);
		calorie=1;
	}
	int getCalorie(){
		return getAmount()*calorie;
	}
}
//繼承食物
class PorkRib extends Food{
	PorkRib(int i){
		super(i);
		calorie=10;
	}
	int getCalorie(){
		return getAmount()*calorie;
	}
}
//繼承食物
class Carrot extends Food{
	Carrot(int i){
		super(i);
		calorie=1;
	}
	int getCalorie(){
		return getAmount()*calorie;
	}
}

class JPA06_1{
    public static void main(String args[]){
    	//建立米的物件
        Rice rice = new Rice(100);
        System.out.println( rice.getAmount() + " grams of rice has " + rice.getCalorie() + " calories.");
        //建立蛋的物件
        Egg egg = new Egg(30);
        System.out.println( egg.getAmount() + " grams of egg has " + egg.getCalorie() + " calories.");
        //建立高麗菜的物件
        Cabbage cabbage = new Cabbage(50);
        System.out.println( cabbage.getAmount() + " grams of cabbage has " + cabbage.getCalorie() + " calories.");
        //建立排骨的物件
        PorkRib porkRib = new PorkRib(300);
        System.out.println( porkRib.getAmount() + " grams of pork rib has " + porkRib.getCalorie() + " calories.");
        //建立胡蘿蔔的物件
        Carrot carrot = new Carrot(100);
        System.out.println( carrot.getAmount() + " grams of carrot has " + carrot.getCalorie() + " calories.");
    }
}