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Message:

...was wondering about that

Posted by Jeff Wright on 17 Jun 1998, 9:21 PM

> One of the things in the LogFile class of this article
> that could potentially be redundant is that I call close()
> on both FileOutputStream and PrintWriter.

Yes, that caught my eye -- thanks for expanding on it!

> ...Seems like this happens from time to time, and it isn't usually
> good enough to just try it and see if it works, because even
> if it works on the environment I happen to be using, if it
> isn't well specified, then there may be other Java environments
> out there where it doesn't work. So I try to program
> defensively (here, defending against vague documentation and
> potentially against various ways the Java environment can be
> implemented by different vendors.)

Hmmm, yes, but I've also seen cases where causing close() a
second time creates an error.

[The specific example I'm thinking of was on a
java.sql.Statement. Since this is just an interface, this
behavior was just a "feature" of the particular JDBC driver.]

--jeff