The JNI UI is documented as not working.
Unless someone fixes the UI, I'm probably going to pull it from the
5.0 release.   

$PTII/doc/ptII4.0.release.htm
which is also found as
http://ptolemy.eecs.berkeley.edu/ptolemyII/ptII4.0/ptII4.0.1/doc/ptII4.0.release.htm

Says
--start--
Limitations in JNI
------------------
* The Interface to C actors using the Java Native Interface is not
available via the Windows Installer (or Web Start). To use the
JNI/Ptolemy II interface, you must download Ptolemy II as source files
and compile.
* The JNI user interface does not permit creation of new JNI actors.

If you follow the instructions in JNIUtilities, then eventually you
will get a NameDuplicationException.

The resulting model will be missing

<property name="output" class="jni.Argument"
value="false,false,true,double">
</property>

We are working with the original authors on a solution.
In the short term, one workaround is to edit the xml file directly and
add the appropriate property by hand.
* JNI will not work with Hierarchical classes, subclasses, and inner
classes 
--end--

_Christopher
--------

    hi
    i tried to add meaningOfLife actor in ptolemy using JNI interface.
    when trying to configure the created actor
    
    name : output
    type: double
    
    i get the following exception.
    
    "change failed:
    xml element "property" triggers exception
    ptolemy.kernel.util.NameDuplicationException:
    Attempt to insert object named "output" into container named 
    "meaningOfLife.meaningOfLifeImeaningOfLife" which already contains an objec
   t 
    with that name in [external stream]at line 1 and column 73 caused by:
    ptolemy.kernel.util.NameDuplicationException"
    How to overcome it.
    please help me.
    -karthik venkatesh.
    
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