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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.一场悲惨的事故后，失忆少女试图在记忆障碍中心重建自己的生活，但非常规的治疗让她疑心渐起。"They will never give up halfway, try different ports, different protocols or carry out attacks from new sources. In short, they will never give up until they reach their goals. Tactics are always changing," he pointed out. "Enterprise users must understand and prepare for this fast and flexible feature of rivals."When the gangsters (18 people in total) boarded the ship, they called in the 23 crew members on board the "Changsheng". The gangsters handcuffed them all and asked the captain to take out the cargo list on board, then shut down the communication system of the "Changsheng". 　　ZhejiangBut it is recommended to learn this content!女律师Christine向往正义，她发现一个蹲了11年监狱的死刑犯很可能是被冤枉的，于是决定查明真相。而地区检察官Adam相信着世上没有绝对的对错，司法原本就是个灰色地带。二人将在剧中展开什么样的对抗？