Where is $JAVA_HOME/lib ?

[jim <jim@amarooas.com.au>]

I have a java application [0] that runs fine x86 linux with sun java, 
but I would like to run this on sparc linux where there is no sun java :(

So I would like to try using debian/unstable java-gcj-compat

The application is in csi.jar and is launched from command line or from 
the web browser  and requires files to be placed as follows

$JAVA_HOME/lib/ext/csi.jar
$JAVA_HOME/lib/security/local_policy.jar
$JAVA_HOME/lib/security/jce1_2_2.jar
$JAVA_HOME/lib/security/US_export_policy.jar

The application starts from the browser or directly by:
$JAVA_HOME/bin/java au.gov.bafcsi.clapi.crypto.CsiManager

Can this work with java-gcj-compat?

What would be the proper location for the files? I have:
/etc/java/security
/usr/share/xulrunner/chrome/en-US/locale/en-US/global/security
/usr/share/iceweasel/chrome/en-US/locale/en-US/global/security
/usr/include/c++/4.1.2/java/security
/usr/include/c++/4.1.2/javax/security
/usr/include/c++/4.1.2/gnu/java/security
/usr/include/c++/4.1.2/gnu/javax/security
/usr/include/security
/usr/lib/jvm/java-1.4.2-gcj-4.1-1.4.2.0/jre/lib/security
/usr/lib/security

jim@sun:~$ java GetJVMInfo
java.version= 1.4.2
java.vendor=  Free Software Foundation, Inc.
java.home=    /usr/lib/jvm/java-1.4.2-gcj-4.1-1.4.2.0/jre
gnu.classpath.home=/usr
gnu.classpath.home.url=file:///usr/lib/../lib

any hints would be appreciated..

thanks
jim

[0] http://csi.business.gov.au/CSI/CsiInstallForLinux.tar.gz