抽象工厂模式

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

//实现类
public class JavaArticle extends Article{

    @Override
    public void produce() {
        System.out.println("生产文章");
    }
}
public class JavaVideo extends Video{

    @Override
    public void produce() {
        System.out.println("生成video");
    }
}

课程
public interface CourseFactory {
    Video getVideo();
    Article getArtcle();
}

public class MyFactory implements CourseFactory{

    @Override
    public Video getVideo() {
        return new JavaVideo();
    }

    @Override
    public Article getArtcle() {
        return new JavaArticle();
    }
}


//主类
public class Client {
    public static void main(String[] args) {
        MyFactory myFactory = new MyFactory();
        Article artcle = myFactory.getArtcle();
        Video video = myFactory.getVideo();
        artcle.produce();
        video.produce();
    }
}