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众人大惊望去，只见一手持木棒，乌面破衣的精瘦老人被徽王府军士按在地上。我老爹和段老有交情，我让他去说说看。　　栖息着奇妙奇怪的生物们，　　第三者的痛苦Another window will pop up halfway to select the JRE installation location, and click "Next" before automatically installing JRE.System.out.println ("this is original method! ");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.