Re: Can this callback mechanism be generified?

From:

Daniel Pitts <newsgroup.spamfilter@virtualinfinity.net>

Newsgroups:

comp.lang.java.help

Date:

Tue, 06 May 2008 10:25:33 -0700

Message-ID:

<48209481$0$7049$7836cce5@newsrazor.net>

Lew wrote:

Daniel Pitts wrote:

It would be more appropriate to throw an IllegalArgumentException I
think. It would probably be even more appropriate to throw a
CallbackException of your own creation.

Casper Bang wrote:

you're right, IllegalArgumentException is more applicable.

Perversely, RuntimeExceptions are more about programming mistakes and
checked exceptions are more about predicted runtime chaos outside the
programmer's control.

This reasoning supports the use of IllegalArgumentException in this
scenario. The programmer might not be able to stop 'new FileReader( f
)' from throwing a FileNotFoundException, but they sure ought to
forestall an illegal argument.

Wait, did we all just agree or not? I'm a little confused because it
seems like Lew is countering the suggestion, but appears to come to the
same conclusion...

Or were you countering my suggestion to throw a custom
CallbackException? In this particular circumstance, I agree with you. I
was thinking of something else when I suggested CallbackException :-)

--
Daniel Pitts' Tech Blog: <http://virtualinfinity.net/wordpress/>