JiuyuParis
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| package lesson1; | |
| import java.io.IOException; | |
| import java.io.InputStream; | |
| import java.lang.reflect.InvocationTargetException; | |
| import java.sql.*; | |
| import java.util.*; | |
| /** | |
| *数据库链接工具包，提供增删改查功能 | |
| * @author 刘昌兴 |