General Stack Trace and Exception Question

Question

I hope this is the correct forum to post to ... well here goes...
The Big Picture:
I�m using the org.xml.sax package (along with their subsequent �helper� and �ext� packages) to parse huge XML files.
Some references:
DefaultHandler -> org.xml.sax.DefaultHandler (Default base class for SAX2 event handlers)
CustomHandler -> mypackage.CustomHandler (which extends the above DefaultHandler)
SAXException -> org.xml.sax.SAXException (thrown by many methods defined in the DefaultHandler)
The story:
I�ve made a class which extends the DefaultHandler class; (CustomHandler). The DefaultHandler class has a bunch of methods declared in it that I overwrite, which all claim to throw these SAXExceptions. My overwritten methods defined in CustomHandler had also been written to throw those SAXExceptions.
My Overwritten Methods: (you�ll see why the �throw� part is commented a little later)
//Methods in SAX DocumentHandler
    public void startDocument(){//throws SAXException{
    public void endDocument(){//throws SAXException{
    public void startElement(String uri, String localName, String qName, Attributes attrs){//throws SAXException{
    public void endElement(String uri, String localName, String qName){//throws SAXException{
    public void characters(char buf[], int offset, int len){//throws SAXException{
The Code Executes like This:
try{
     File xmlFile = new File(getFileName());
     CustomHandler myHandler = new CustomHandler();
     saxParser.parse(xmlFile, myHandler); //<- Important Line
     myHandler.reportSomeXmlInfoAboutTheFile(); //<- Ignore this command
}catch(ParserConfigurationException pce){
            pce.printStackTrace();       
}catch(SAXException sax){
            sax.printStackTrace();
}catch(IOException ioe){
            ioe.printStackTrace();
}Sample Stack Trace: (The ArrayIndexOutOfBoundsException was set up to be thrown for the sake of discussion)
java.lang.ArrayIndexOutOfBoundsException: 5
at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:691)
at org.apache.crimson.parser.Parser2.parse(Parser2.java:337)
at org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:448)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:345)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:281)
at saxparserexercise.DriverClass.exercise(DriverClass.java:58) //<- Last (un Native to ME � not java) execution stack point
at saxparserexercise.Main.<init>(Main.java:38)
at saxparserexercise.Main.main(Main.java:59)
The Problem:
Its about my stack traces� they all map through the above noted �Important Line� instead of through my overwritten methods in CustomHandler (where I cause the ArrayIndexOutOfBoundsException) So, therefore I thought I�d try commenting out those �throws SAXException� parts in the method declarations of my CustomHandler class� Diddn�t change a thing. Thus my question is�
The Question:
What changes or modifications can I make such that the Stack Trace I receive will map to exactly where the problem occurs in my code� does that make sense?

Answer 1

I suspect it may be because your version of Catalina was compiled without debugger support. From what I remember this strips line numbers from generated class files.
You'll need to download either a debug-enabled version of Catalina, or pull down the source and rebuild the system.
Unless I'm barking up the wrong tree.
J