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编写Java程序，在维护英雄数据的业务过程中复用数据库操作封装类

需求说明：继续完善英雄信息系统，将HeroAccess类中数据库连接相关代码独立出来，并将其封闭成数据库操作工具类DbConnection，便于管理和代码复用。在HeroAccess类中通过调用工具类DbConnection，实现对英雄数据的新增、删除和更新。实现思路：参照9.3.1示例定义数据库操...

编写Java程序，使用PreparedState实现对英雄数据的新增、删除和更新

需求说明：使用PreparedState实现对英雄数据的新增、删除和更新英雄（t_hero）表结构实现思路：使用PreparedState实现对英雄数据进行维护的实现思路创建Hero类，该类与数据库中的t_hero表进行匹配，即t_hero表中的字段与Hero类中的属性一一匹配。创建HeroAcce...

java程序中怎样用文件存储数据

数据结构的课设让写一个宿舍管理系统，用java写怎么才能不用数据库存储数据，而用文件？

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更新时间 2023-01-15 17:11:50

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