ModSAX (SAX 1.1) Proposal

David Megginson david at
Wed Feb 17 14:13:35 GMT 1999

Jarle Stabell writes:

 > Is it obvious that one should throw exceptions on not supported?  I
 > believe it in many cases would be more comfortable if it returned a
 > boolean supported or not instead of throwing an exception, as many
 > clients probably want/need to check whether a particular feature is
 > supported or not (and trade off behaviour accordingly)

As I just mentioned in a reply to Don, exceptions provide for cleaner
code and they help avoid bugs by enabling more compile-time checking.
It's easy to write

  parser.setFeature("org.xml.sax.features.namespaces", true);

and forget to check the return value, but it's harder to forget to
catch an exception.

All the best,


David Megginson                 david at

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