[jdom-interest] JDOM problems with jdk1.4

[Tim Johnson]

Hi all,
 
I'm having a bit of problem upgrading from jdk1.3 to 1.4 seemingly due
to something going awry in jdom.   In Version 8 
(1.8 2002/01/19 10:15:17), if I use the jdom.jar file as is, I get the
following exception thrown:
 
Error loading Vision Server Program configuration: Could not load
default SAX parser: org.apache.xerces.parsers.SAXParser: SAX2 driver
class org.apache.xerces.parsers.SAXParser not found:
org/apache/xerces/parsers/SAXParser .
 
This, although, org.apache.xerces.parsers.SAXParser.class is in the
xercesImpl.jar file, which is certainly included in the classpath.
 
The problem seems to come from the protected XMLReader createParser()
throws .... { } in SAXBuilder.   
The appropriate section is:
 
protected XMLReader createParser() throws Exception {
        XMLReader parser = null;
        if (saxDriverClass != null) {
 //if (false) {  --- tried to force JAXP here, which also didn't work
     
            // The user knows that they want to use a particular class
                 parser =
XMLReaderFactory.createXMLReader(saxDriverClass);
            //parser = new org.apache.xerces.parsers.SAXParser();
            // System.out.println("using specific " + saxDriverClass);
     } else {
<snip> 
 
Now if we comment out the XMLReaderFactory call and use the parser = new
org.apache.xerces.parsers.SAXParser() call, then we get a
java.lang.OutOfMemory error (and using vmstat on Linux, we definitely
see a huge drop in available memory).
 
In version 9, (LICENSE.txt,v 1.10 2003/04/10 08:36:05), we always see
the could not find SAXParser class again.  Is this a known problem fixed
in a later JDOM snapshot I need to download?  Or is this a bug that will
get addressed at some point later?  Or are we simply not doing something
correctly?
 
Apologies for the length of this message, and if anybody needs more
details, please let me know.
 
Thank you,
Tim
 


Tim Johnson
Programmer Analyst
Vision Solutions, Inc.

17911 Von Karman Ave,  5th Floor
Irvine, CA 92614
UNITED STATES

Tel: +1 (949) 253-6528
Fax: +1 (949) 225-0287
Email: tjohnson at visionsolutions.com
<http://www.visionsolutions.com/>
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