(keitai-l) Re: Shirinking jar file

Hi Colin,

There is nothing that stops you for doing a preverify on a JAR !!! I do that
all the time, and it works like a charm.

So I compile, create the JAR (with resource files), use retroguard (and
ProGuard and JOPT...) and then preverify that JAR !!

Best,

Sam

> -----Original Message-----
> From: keitai-l-bounce@appelsiini.net
> [mailto:keitai-l-bounce@appelsiini.net]On Behalf Of Colin Mack
> Sent: Wednesday, December 18, 2002 11:15 AM
> To: keitai-l@appelsiini.net
> Subject: (keitai-l) Re: Shirinking jar file
>
>
>
> I'm not familiar with using JBlender to shrink .jar files, so I can't
> speak to that.
>
> Most people's first step is to use a Java obfuscator. Are you doing
> that yet?
>
> If not I recommend you get one and use it. Obfuscators rename all your
> classes, methods & members to 1 or 2 character names so people can't
> easily reverse engineer your java programs, but this also has the happy
> side effect of reducing the size of your classes, since those names are
> all stored in the class files.
>
> I use retroguard (it's free, yeah!). It is a bit of a pain to use,
> because retroguard works on completed .jar files, which in turn wrecks
> your preverification, which was done on the individual classes before
> making the .jar file. So you need to compile, jar the classes, run
> retroguard on the jar, split the jar back into classes, preverify the
> classes again, make a new jar with the preverified classes. Kind of a
> pain but once you put it in a batch file you can just forget about it.
> It shrinks the size down a lot for me, but I tend to use super long
> variable names because I am old and forgetful :) If you name all your
> variables a, b, x,  y, etc., it may not do much for you.
>
> There are lots of other things you can do, depending on how desperate
> you are :)
>
> - Colin
>
>
> On 2002.12.18, at 06:35  PM, Ma. Kharisma V. Esguerra wrote:
>
> > is there any other optimizing/compression tool for iAppli jar files
> > aside
> > from JBlender... i tried compressing my iAppli using JBlender but it
> > only
> > produced non-downloadable jar file. help...
> >
> >
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> >
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