How install my jar+native package for JRE plugin

Question

I cannot figure out how to deploy a plugin consisting of a Java package that calls native code. The calling order is:
Applet -> installed classes in lib/ext/my.jar -> DLL in C:\\WINDOWS\SYSTEM32
I have gotten my plugin to work on Windows IE using the Microsoft JVM, and on Netscape using LiveConnect, and on Mac using MRJ. It also works with stand-alone Java applications. But I cannot get it to work with Applets when I am using the SUN JRE plugin for Java!
I can call the classes in the JAR file but they can't loadLibrary( the DLL ).
I put my JAR file in "C:\Program Files\JavaSoft\JRE\1.3.1_04\lib\ext".
I put my DLL in "C:\WINDOWS\system32" which is in the "java.library.path".
I was hoping that by installing the JAR file in the lib/ext folder that it would elevate its privelege and allow it to call loadLibrary().
I don't want to have to sign each Applet. My plugin is installed using a digital certificate. Once installed it should give regular Applets the ability to call my native code.
I am hoping to simply use a signed Java installer for the plugin that will copy my JAR file and DLL to the right places.
If you use IE or Netscape without the SUN plugin, you can try my plugins here:
http://www.softsynth.com/jsyn/plugins/
http://www.javasonics.com/plugins/
I'm tired of telling people to disable the SUN JRE plugin and enable the Microsoft JVM in order to use my plugins.....
Any ideas?
Thanks,
Phil Burk

Answer 1

I found a solution to my own problem. The problem was that classes in a JAR file installed in the "java.ext.dirs" path could not call System.loadLibrary() when called from an Applet.
The solution was to explictly make use of the priveledged status of the extension classes as follows:
Boolean result = (Boolean)
AccessController.doPrivileged(new PrivilegedAction()
public Object run()
System.loadLibrary("mylib");
return null;