java environment variables when setting up sax

["Jonny Rylands" <jonny@rylands.biz>]

Hi

Could anybody explain the differences between setting these two java
environment variables when tieing sax to a particular implementation:

1) org.xml.sax.driver
2) javax.xml.parsers.SAXParserFactory

I seem to be finding documents that tell you to set the first one and
other documents that tell you to set the second.

Thanks,
Jonny Rylands.