How to get runtime library EXT?  i.e. ".dll" or ".so"

Is it possible to determine the runtime library extension for the platform being used? For example, running on Windows I want to get ".dll" on solaris get ".so" and so on.
This is for implementing ClassLoader.findLibrary
J

OK - I tried that - still not working.
Heres what it looks like:
The dll I need is in this directory --> C:\\dev\\foo\\Prototype\\CLASSES
System.setProperty( "java.library.path" , "C:\\dev\\foo\\Prototype\\CLASSES" );
System.loadLibrary(System.mapLibraryName("JNIEventLog"));
I get the error:
Exception in thread "main" java.lang.UnsatisfiedLinkError: no JNIEventLog.dll in
java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1349)
at java.lang.Runtime.loadLibrary0(Runtime.java:749)
at java.lang.System.loadLibrary(System.java:820)
at com.client.whatever.main(client.java:53)
What is wrong? The java.library.path is set to where the dll is. Why does the loadlibrary function not work?
I'm using Windows 2000.

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