[nylug-talk] Excesive memory usage by Java (ranty)
sixtyfourbeets
sixtyfourbeets at gmail.com
Tue Jan 22 14:10:35 EST 2008
> What exactly are you trying to do? (Not sure if I understand from your
> question above) Perhaps I can help.
Forgive me if I sound elementary, I'm only now gaining an
understanding of some aspects of how
Java works. So here is what I discovered with this application and
what I would like to accomplish.
This application has a series of JARs, which I have unjarred.
Some of them have META-INFO directories, or something to that effect.
I'd like to trace how the different 'class' files interact with one
another and extract an
API esque interface, this software does come with a DDE for what I
think is taking a
snapshot of a particular stocks price, volume, etc to import into Excel.
But that DDE doesnt seem to stream from a software level, however it
does come in a jar
with 'classes'.
However before I can actually access any of this data I have to log
in, I've tried
using gij but the software uses a certificate which I believe I have
been able to dump with jcontrol.
I've run the -verbose option and it dumps a lot of information which I
am not sure on how to interpret it.
I think I understand these class files have entry points and I think I
have an idea
of what they might be with jcf-dump. I havent tried invoking any of these
files with Perl or C or anything. Is it just a matter of passing
variables to these
class files the same way it would be to a subroutine (or object(?)) correct?
So the things I'd like to tackle are figuring out which class files
interact with which,
extracting/dumping data from those class files (an APIesque scenario),
logging in without logging in through the software would be nice too.
Literally taking a sledge hammer to the software would be great too
if such a thing were possible.
Steve M
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