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Then look at branches 2, 3, 4 and 5 in the figure. As can be seen from the previous Android event distribution flow chart, they can reach the same conclusion, so they can be regarded as a situation.友子の長い朝 ともさかりえ 志垣太郎剧场版《刀剑神域剧场版：进击篇》的第二部《#刀剑神域剧场版 进击篇第二部 阴沉薄暮的诙谐曲#(劇場版 ソードアート・オンライン -プログレッシブ- 冥き夕闇のスケルツォ )》将于2022年秋上映~讲述了几个年轻人共同经历的发生在清宫里的妙趣横生曲折离奇的奇葩生活。堪称史上最狂，最霸气，最正能量版还珠格格！ 秒杀‘赵薇’‘林心如’版 让你笑出深度，乐出内涵！有信息就有意义，有意义就会有更多的信息。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.