When does a stream close if its not closed manually?

Question

I would like to know when does a stream close if its not closed manually. By this I mean, will the stream be closed if the scope of its reference is no more?

Conside

Answer 1

In the case of FileInputStream there's a finalize() method that will free resources when the stream is garbage collected.

Not that you can or should rely on that. It's just what FileInputStream does. SocketInputStream on the other hand overrides finalize() to explicitly do nothing, relying on Socket to close the resources (and Socket doesn't have a finalize() method).