It will use whatever Connection you used to create the Statement - unless you closed the connection, in which case it will throw an exception at you.
The Thread concerns me a bit, though. You are aware that
JDBC connections aren't threadsafe? You would have to know exactly what you're doing, carefully establish responsibilities (which class & thread will close the connection and when, etc). It sounds like a refactoring candidate. But that's just a kneejerk reaction.
- Peter
