I have a Java app installed locally that works fine on my machine and I want
to make it work on my web server ; the architectecture of this app is as
follows :
- "run.sh" (script that launches the app with this command line :
$JAVA_HOME -Dapp.log.level=FINE -Xmx512m -Xms32m -jar run.jar
- "run.jar" the main file is located at the same level
- "lib" directory containing a collection of jar files
- other directory with mainly data but also other java classes and a few
other jar files used by the application.

I did the following :
- copied golbally the whole structure into my website without the "run.sh"
file but with a "my_file.jnlp" file supposed to be used by WebStart to
launch my app.
- certified all jar files with a keystore of my own.

My "my_file.jnlp" file is like this :

<?xml version="1.0" encoding="utf-8"?>
<!-- Test for Web Start Deployment -->
<jnlp spec="1.0+" codebase="http://virtual1.com/genealogy"
href="my_file.jnlp">
 <information>
   <title>AZUN</title>
   <vendor>Daniel Moyne</vendor>
   <homepage href="http://localhost/genealogy"/>
   <description>Généalogie</description>
   <description kind="short">Généalogie///</description>
   <icon href="icon.gif"/>
   <icon kind="splash" href="splash.gif"/>
   <offline-allowed/>
 </information>
 <security>
   <all-permissions/>
 </security>
 <resources os="Linux">
   <j2se version="1.5+"/>
   <jar href="run.jar"/>
  <jar href="lib/genj.jar"/>
  <jar href="lib/genj_en.jar"/>
  <jar href="lib/genj_fr.jar"/>
  <jar href="lib/console.jar"/>
  <jar href="lib/geo.jar"/>
  <jar href="lib/graphj.jar"/>
  <jar href="lib/jump.jar"/>
  <jar href="lib/jfreechart.jar"/>
  <jar href="lib/jhbasic.jar"/>
  <jar href="lib/libreadline-java-0.8.0.jar"/>
 </resources>
 <application-desc/>
</jnlp>

where :
- "virtual1.com" is an apache2 virtual server (no problem with this as
properly installed)
- "genealogy" is the directory where all the application has been copied
into
- "my_file.jnlp" this file as described above.
- <ressources> some jar files : the main one "run.jar" and all those
included in "lib" directory (what about others ?).

When I click on my jnlp file I get from Webstart an error message saying
that different certificates have been used which for me is not clear as I
have changed certificates with my own keystore on all jar files which here
somehow modifies the original application that runs locally with no
problems !

I prefer to start with these basic questions :
(1) what is the use <ressources> : to download jar files from main server to
client computer and if yes what about the other files containing data ?
(2) in the jnlp file where is the important line telling where to start the
application here "run.jar" as the main jar files if all other jar files
must be include as well  ?
(2) how to provide to WebStart the equivalent of :
"-Dapp.log.level=FINE -Xmx512m -Xms32m"

I will have more from answers.

Thanks.