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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.Updated May 14但是，能让玩家留下，一直玩这个游戏，那只有一个原因，那就是这个游戏很好玩。Dalgona是描绘高中生寻找真正友情的成长电视剧。主人公宋美娜(孙周延饰)中学时期积极乐观，看到不义行为就忍不住的性格，因此被卷入了校园暴力事件，被同校同学排挤，逃往美国去留学。性格因过去的伤痛而变得小心翼翼。这样的美娜在再次回来时在韩国交了新朋友，描写了治愈心中伤痛成长的过程。Step 2: Start the game野狼的声声嚎叫传来，本有已经有些许困意的卫兵和岗哨陡然间都打起了十二分精神。一个便是努力经营越国，将其打造成一个安居乐业，生活富足的国度。