我有一个应用程序可以频繁且几乎连续地访问我的H2数据库。我所做的是,每个方法打开数据库,对其进行更改,然后将其关闭。这样做的问题是,即使我已经打开了database,我也会收到org.h2.jdbc.JdbcSQLException: The object is already closed [90007-196]消息下面是我的代码 this.openData
在multiple try-catch的docs中有一条语句。If a catch block handles more than one exception type, then the catch parameter is implicitly final.In this example, the catch parameter ex is final and therefore you cannot assign any values to it withinthe catch b