询问 Google [ ^ ]

您可以将其视为一组考虑到典型企业应用程序的API。所以你有支持并发，事务和持久性的东西（以及许多其他人 [ ^ ]）。



另外，我认为它暂时不被称为 J2EE ，现在人们将其称为 Java EE 。



希望这会有所帮助，

Fredrik

You can think of it as a set of APIs designed with typical Enterprise applications in mind. So you have things like support for concurrency, transactions and persistence (along with many others[^]).

Also, I don't think it has been called J2EE for a while, these days people refer to it as Java EE.

Hope this helps,
Fredrik