工厂方法模式--水果实例

public abstract class Fruit {
	public abstract void get();
}


public class Apple extends Fruit{

	@Override
	public void get() {
		System.out.println("get apple");
	}

}


public class Banana extends Fruit{

	@Override
	public void get() {
		System.out.println("get Banana");
	}

}

public abstract class FruitFactory {
	public abstract Fruit getFruit();
}


public class AppleFactory extends FruitFactory {

	@Override
	public Fruit getFruit() {
		return new Apple();
	}

}


public class BananaFactory extends FruitFactory {

	@Override
	public Fruit getFruit() {
		return new Banana();
	}
}

public class MainClass {
	public static void main(String args[]) {
		// 首先获得苹果工厂
		FruitFactory ff1 = new AppleFactory();
		// 通过AppleFactory来创建Apple 对象
		Fruit apple = ff1.getFruit();
		apple.get();

		// 首先获得香蕉工厂
		FruitFactory ff2 = new BananaFactory();
		// 通过BananaFactory来创建Apple 对象
		Fruit banana = ff2.getFruit();
		banana.get();
	}
}