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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.香荽等人听得愣愣的，不过都一齐乖乖点头。本故事讲述五个应召女郎的可悲故事。女明星珍妮表面上为纯情电影明星，实际上却是高级应召女郎；美凤因为老公患有肾病，苦于无法支付高昂药费，只有堕入红尘；珊珊虽天性冷傲，其母病入膏肓，为维持母亲一线生机也不得不放下身段；玲玉来自大陆，生性乐观开朗，与珊珊同住一屋，互相照顾；娟娟年轻叛逆，因继父对其动手动脚，而母亲却无能为力，因而离家出走，却遇人不淑，男友欠下高利贷逼其接客还债。。。。。。苏州城第一美人沈梦芸，无数男人垂涎三尺想要娶的女子、却为了一纸婚约，等待毫无音讯的萧家男子十年。十年之期萧家是否遵守承诺，回来迎娶沈梦。归来的道路上萧家大帅又遇到了谁，让他心心思念、一心求娶、可以为之付出一切？又是谁，让苏州城富甲一方的苏家大少爷可以为止付出生命？一个自己心爱之人、一个是为了自己能付出一切的人？她，又该何去何从……本片讲述了由军人和地方人员共同研究国外飞来的飞行物，在研发过程中要面对各国的豺狼虎豹，然后组成了”利剑行动小组“在错综复杂的危险环境中，每名成员发挥各自智慧和特长，形成战无不胜的力量，在惊心动魄中，把国家赋予的使命向前推进。在进行了激烈的斗争后，我方拿到了飞行器的残壳。此后，展开殊死搏斗。I won't repeat much about the profound and pure theoretical explanation here. After all, the written explanation is too lenient. I'm going to say something simple and visible here. Let's start now.《青春抛物线》生动地描写了一群可爱的中学生，表现了多姿多彩的校园生活，剧中处处以孩子的视角来观察校园生活和成人世界，揭示了当代少年复杂多变、丰富多彩的内心世界，忠实地记录了他们在成长过程中的烦恼和欢乐