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5. West Lake ParkFlyWeightFactory 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.Our App is used as launcher by Android as the system application task stack, so it is not displayed.Weightlifting's snatch result is much lower than its squat result. If you squat 160KG to the limit, you naturally don't need a belt when you squat 80KG. However, the results of strength lifters are almost close to or more than twice as much as those of weightlifters of the same weight, without belts? It will kill people.从陈启发布第一部武侠小说开始，《侠客》杂志就一直疲于应对，寄予厚望的《天河魔剑录》《沧海龙帝》都是一败涂地，好不容易在《刀剑封神录》这部小说上翻身，但是还没来得及细细品味胜利的喜悦，《倚天》的人气就以迅雷不及掩耳的速度，超过了《刀剑封神录》。Xinjiang Uygur Autonomous Region还是要防备着刘邦，我们的西征计划也该考虑开始了。