SAX2: Should SAXException extend IOException?

David Megginson david at
Wed Dec 22 19:08:53 GMT 1999

Rajiv Mordani writes:

 > I am not sure what the intent is of having IOException. I think
 > SAXException seems appropriate to me..

I'd like to hear as many opinions on this point as possible.  What is
the rationale for *not* deriving SAXException from IOException when
(for example) and are derived from IOException?

I especially like the idea that higher-level libraries could have

  void importXML (String uri) throws IOException;

without the application's having any direct dependency on SAX
interfaces.  It could accomplish the same thing by having a
SAXExceptionAdapter that embeds the SAXException and extends
IOException, but that seems like a lot of unnecessary fuss for a very
common case.


All the best,


David Megginson                 david at

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