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Newsgroups: comp.lang.java.programmer
From: Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at>
Subject: Re: Trying to Understand Purpose of a Catch Block for IOException in the Presence of One for FileNotFound
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KevinSimonson <kvnsmnsn@hotmail.com> wrote:
> I've actually written a number of different programs trying to find
> something that I can run that will throw an exception that is a
> <IOException> but not a <FileNotFoundException>.

Just speculating:  have you tried to read a large file from
an USB thumbdrive and midway disconnect the drive?

Warning: that *may* damage the thumbdrive (even physically,
not just the filesystem on it!), so use an old small one that
you wont miss in case it's really broken afterwards.

> I've opened a file for input, done a "chmod u-r <filename>"
> while the program's running, ...

Removing permissions after the file has been opened doesn't
ever matter, anyway.  Permissions are only checked at open().