简单工厂(二)——coding

public abstract class Video {
    public abstract void produce();

}

public class JavaVideo extends Video {
    @Override
    public void produce() {
        System.out.println("录制Java课程视频");
    }
}

public class PythonVideo extends Video {
    @Override
    public void produce() {
        System.out.println("录制Python课程视频");
    }
}

public class VideoFactory {
    // 反射实现
    public Video getVideo(Class c){
        Video video = null;
        try {
            video = (Video) Class.forName(c.getName()).newInstance();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        return video;
    }

    // 基础实现
    public Video getVideo(String type){
        if("java".equalsIgnoreCase(type)){
            return new JavaVideo();
        }else if("python".equalsIgnoreCase(type)){
            return new PythonVideo();
        }
        return null;
    }

}

public class Test {
    public static void main(String[] args) {
// 方式一：
//        VideoFactory videoFactory = new VideoFactory();
//        Video video = videoFactory.getVideo("java");
//        if(video == null){
//            return;
//        }
//        video.produce();

// 方式二：
        VideoFactory videoFactory = new VideoFactory();
        Video video = videoFactory.getVideo(JavaVideo.class);
        if(video == null){
            return;
        }
        video.produce();

    }