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java-mysql中getConnection();得到的Connection 怪怪的。

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Release： 2016-06-06 09:39:36
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mysqljava

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这个是返回我的Connection连接对象。
图片说明
我若直接在public static Connection getConnection() 所在类。main方法，以及
在public void add(User user) {所在类 main方法直接调用test()，，每次运行老是给我返回com.mysql.jdbc.JDBC4Connection@446cdf90同一个对象。。
而若间接着好多个类调用先调用new LoginFrame();——》new UserDAOJDBCImpl().test();则给我随机的些Connection对象。。好难理解哦哦。。

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