[jdom-interest] Additional JDOMException subclasses

[Jason Hunter]

Rusty, are you still willing to send in a patch for this?  It seems like 
a sensible change.

-jh-

Elliotte Rusty Harold wrote:
> Currently JDOMException covers a lot of ground. For example, both 
> well-formedness and validity errors are reported just as "JDOMException" 
> even though SAX can distinguish them. I suggest it would be useful to add a
> 
> ValidityException extends JDOMException
> 
> for use by SAXBuilder. Simple use-case: a utility program that checks 
> documents for errors and reports them (about the third example in my 
> JDOM tutorial) should be able to distinguish well-formedness and 
> validity errors.
> 
> Are there any other more detailed exception classes anybody wants? For 
> instance, should we also have a separate
> 
> MalformedException extends JDOMException
> 
> There are, after all, some JDOMExceptions that are neither 
> well-formedness nor validity errors.
> 
> Let's discuss what we might want; and then, if we've got a rough 
> consenseus, I'll take a whack at the code. Note that unlike my earlier 
> exception patches for IOException these should be completely compatible 
> with existing code. They should break anybody's programs.
>