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Old 10-12-2005, 11:01 AM   #1
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JAVA JNI program to access shared library

Operating system: Red Hat Linux 2.4.21-4.EL.
GUI interface: GNOME

I am writing a JAVA JNI program using JDK 1.5.0_04 version and netbeans 4.1 IDE. I am trying to access a shared library called "" that was written in GCC compiler.

I have placed this "" library in the JAVA CLASSPATH

I used the statement : System.loadLibrary("dfa");

- when I run the program from within netbeans, I get the error message :

Exception in thread "main" java.lang.UnsatisfiedLinkError: no dfa in

* Is there any more environment varaibales I need to set ?

* Where do I place my ""?

* Is this the right syntax?

- Using GUI Natutilus 2.2.4 ( a graphical shell for GNOME), I tried to run
The jar file by double clicking on it, and nothing happens. It won't run.

* How do I run it from the GUI session?

Thanks in advance.

Old 10-13-2005, 06:16 AM   #2
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have a look at the jni tutorial. Why would you place a so file in the classpath?? use LD_LIBRARY_PATH and add options to find the library in the project run options(netbeans)
Old 10-13-2005, 10:36 AM   #3
Registered: Jun 2004
Location: MD
Distribution: Fedora Core
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yes, the lib file should be in LD_LIBRARY_PATH instead. This might help you


sorry, can't help you with settings netbeans, never used it.

Last edited by csfalcon; 06-09-2008 at 10:24 AM.
Old 11-17-2005, 05:13 PM   #4
Registered: Jun 2005
Location: Indiana, USA
Distribution: OpenBSD, Ubuntu
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JNI In A Nutshell

Great JNI tutorial, csfalcon. I was having some troubles with JNI myself; your page takes a lot of information and makes it easily accessible. Nice work; it sure made my life a little easier!


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