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老丁挑了挑眉毛说道，再说了，你是举人家的公子，大家看着举人的声望，也会来帮忙的。One problem with the factory method pattern is that the creation of the class depends on the factory class, that is to say, if you want to expand the program, you must modify the factory class, which violates the closure principle. Therefore, from the design point of view, there are certain problems, how to solve them? We use the abstract factory mode to create multiple factory classes, so that once new functions need to be added, we can directly add new factory classes without modifying the previous code. Because the abstract factory is not very easy to understand, let's look at the diagram first, and then it is easier to understand with the code.“ HiGH＆LOW”团队新项目启动！ 片田凉太，佐野怜（Reo Sano），川村优马（Yuma Kawamura），吉野北人（Kitato Yoshino）等。Precautions for Examination of Qualification Certificate for Kindergarten TeachersSystem.out.println ("after decorator! ");面对着积攒了数年的恨，和不曾淡忘的爱，闫夏究竟该怎样和韦雪相处……