一個專一工廠模式的農場(青銅形態-簡單工廠模式)

如今的農場有三種水果:Grape、Strawberry、Apple.app

一名園丁在管理整個農場,向市場提供現有的水果:ui

public class FruitGardener {
    public static Fruit factory(String which)throws NoFruitException{
        if(which.equalsIgnoreCase("apple")){
            return new Apple();
        }else if(which.equalsIgnoreCase("grape")){
            return new Grape();
        }else if(which.equalsIgnoreCase("strawberry")){
            return new Strawberry();
        }else{
            throw new NoFruitException("Wrong fruit request!");
        }
    }
}
public class NoFruitException extends Exception {
   public NoFruitException(String msg){
     super(msg);
   }
}
水果都是這樣的.水果接口:
public interface Fruit {
    //生長
    void grow();
    //收穫
    void harvest();
    //種植
    void plant();
}接口

蘋果是這樣的:it

public class Apple implements Fruit{
    public void grow() {
        System.out.println("Apple is growing...");
    }
    public void harvest() {
        System.out.println("Apple has been harvested.");
    }
    public void plant() {
        System.out.println("Apple has bean planted.");
    }
}
葡萄是這樣的:
public class Grape implements Fruit{
    public void grow() {
        System.out.println("Grape is growing...");
    }
    public void harvest() {
        System.out.println("Grape has bean harvested.");
    }
    public void plant() {
        System.out.println("Grape has bean planted.");
    }
}io

草莓是這樣的:
public class Strawberry implements Fruit{
    public void grow() {
        System.out.println("Strawberry is growing...");
    }
    public void harvest() {
        System.out.println("Strawberry has bean harvested.");
    }
    public void plant() {
        System.out.println("Strawberry has bean planted.");
    }
}
市場是這樣的:
try{
    FruitGardener.factory("grape");
    FruitGardener.factory("Apple");
    FruitGardener.factory("strawberry");
}catch(NoFruitException ex){
           
}
最近香蕉價格漲停,可是這個園丁不會種,老闆考慮是換一個園丁或者讓這個園丁去osc培訓種香蕉呢?不管如何加班是必定的了 class

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