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FlyWeightFactory is responsible for creating and managing meta-units. When a client requests, the factory needs to check whether there are eligible objects in the current object pool. If so, it returns the existing object. If not, it creates a new object. FlyWeight is a superclass. When it comes to shared pools, It is easy to think of JDBC connection pooling in Java, Considering the characteristics of each connection, It is not difficult for us to sum up: Applies to several objects that are shared, They have some common attributes, Take the database connection pool as an example, url, driverClassName, username, password and dbname, these attributes are the same for each connection, so it is suitable to use the meta-sharing mode to process, build a factory class, take the above similar attributes as internal data and the others as external data, and pass them in as parameters when calling methods, thus saving space and reducing the number of instances.啧啧，最美的情诗，好大的名头啊……吕文心继续酸溜溜的说道。打破男生的垄断，在探侦领域出现了“女生宿舍”，4位美少女组合，她们各个身怀绝技、聪慧过人，在《探侦学院》里尽展她们的才华。故事发生在一个虚构的城市——福尔摩市，那里有一间专门训练侦探、教授破案技巧的“金甲虫探侦学院”。而本故事的主人翁是四个背景不同、性格各异、目标不一的少女。四个探侦女生寻求一个个疑团答案，而每一个答案都是一个新问题，她们大胆假设，小心求证，为探侦技术而积极探索，并将探侦融入生活……江口德子饰演新创企业破天荒的女社长,以追求超级富豪为幸福宗旨的职业女性,赤楚卫二饰演天真无邪的小狗系男孩,在风险投资公司参加实习测验,与主角背道而驰的贫穷学生,努力支持着每天面临困难的她,将大大地改变公司的未来和她的生活。二弟，我对不起你。　　农村出身的拉丁舞老师余梦辉（张敬轩 饰）在被要求比赛三连冠的压力下，以严苛的方式训练少儿舞蹈队，但比赛却以失败告终余梦辉还被家长揍了一顿。心灰意冷的他回到乡下父亲（林雪 饰）的菠萝园，怎料小队员们追来，在舞厅老板蓝姨（郝蕾 饰）的说动和小朋友的努力下，余梦辉重整旗鼓，他决定带着小朋友们重回舞台，却错过了第二场比赛，同时一场真人秀比赛向他们发出了邀请，等待他们的将会是什么？