XML parsing - org.xml.sax.driver not specified

Question

I am attempmtping to parse my first XML document and get the following excpetion when running my prog.
org.xml.sax.SAXException: System property org.xml.sax.driver not specified.
I am following the examples in the O'Reilly Java and XML book but suspect I am missing something obvious.
This is the offending line of code:
XMLReader xr = XMLReaderFactory.createXMLReader();
Any help will be appreciated.

Answer 1

You need to set a property for your class that invokes your SAX handler. This is the property you need to set
org.xml.sax.driver=???
Where ??? is the name of the package where your SAXparser lives.
for example, my sax driver is in:
org.xml.sax.driver=org.apache.xerces.parsers.SAXParser
(see code below)
Also, a sweet reference is Elliot Rusty Harold's "XML processing with Java", which answered all the practical questions I had -- really! And is free, online.
http://www.ibiblio.org/xml/books/xmljava/chapters/index.html
This is the code for main() where my xml handler is invoked
try
{  SpiderHandler spiderHandler = new SpiderHandler(testSpider);
   XMLReader reader = XMLReaderFactory.createXMLReader();
   reader.setContentHandler(spiderHandler);
   for (int i=4; i<args.length; i++)
   {   FileReader xmlScript = new FileReader(args);
System.out.println("Input file number "+i+" named "+args[i]);
// org.xml.sax.XMLReader.parse(InputSource) interface
// see org.xml.sax.InputSource class      
reader.parse(new InputSource(xmlScript));
catch(Exception e)
{   System.out.println("Error encountered in parsing from main(). \n");
e.printStackTrace();
Luck to you! XML is a joy.