can anyone tell me the default java.library.path..
hi,
i'm using jdk5 with netbeans ide..
i'm trying to load an interface in my project. this interface has its dll and jar file..
i have tried system.load(), system.loadlibrary(), system.setProperties()..
it gives a runtime error that class definitions not found... wht should i do?
i've added the jar file in the library of the project using netbeans. there all the class files can be seen.. but it gives an error as follows:
Exception in thread "main" java.lang.UnsatisfiedLinkError: C:\jri\jri.dll: Can't find dependent libraries
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1751)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1647)
at java.lang.Runtime.load0(Runtime.java:769)
at java.lang.System.load(System.java:968)
at rtest.main(rtest.java:59)
what should i do?
try to set the path of your project.Netbeans: Project > Project Property (or similar)then add the jars needed.hth
I think the default java.library.path is empty. You can try setting it on invocation of the java program with the -D switch:
java [...] -Djava.library.path "C:\jri\jri.dll" [...]
http://forum.java.sun.com/thread.jspa?threadID=617777&messageID=3453543
Edit: Apparently, in Netbeans, you can edit your netbeans.conf file to change your java.library.path, as well, or:
- In the Project Properties window in the Categories pane, select the "Run" section.
- Enter the VM Argument: -Djava.library.path="C:/AgentFX/natives/win32"
- Click OK.
Project Properties > Libraries > add JAR/Folder
System.setProperty("java.library.path", System.getProperty("java.library.path") + File.pathSeparator + s);hth
i have tried the -d switch..it throws noclassdeffound exception..n after setting the properties->libraries->jar files as well it givs an error saying jri native library not found..
What class is it saying isn't found? The NoClassDefFound error is a different problem entirely.
i don't know what class....but when i tried the -d way of setting the class path it gave me the error.. the folder that i have specified in the path contains jri.dll as well as jri.jar. wht should i do?
i've just tried this:
System.setProperty("java.library.path", System.getProperty("java.library.path") + File.pathSeparator + s);
but it gives a run tim error as follows:
Exception in thread "main" java.lang.UnsatisfiedLinkError: C:\jri\jri.dll: Can't find dependent libraries
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1751)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1647)
at java.lang.Runtime.load0(Runtime.java:769)
at java.lang.System.load(System.java:968)
at rtest.main(rtest.java:60)
Add the .jar file to your project as a library, and pass the -D switch as shown above (except switch out the example directory with yours). Then, if you get a NoClassDefFoundError, there is something else you need. Try that, and if you have problems after that, post them here.
This might help, but I'm not sure:
http://metnet.vrac.iastate.edu/MetNet_fcmodeler_cytoscape_main.htm
add jri.dll and jri.jar to the classes or bin directory and compile again.
> System.setProperty("java.library.path", System.getProperty("java.library.path") + File.pathSeparator + s);
What does "s" contain?
I'd much rather set it at invocation with the -D switch. That way, you don't have to manually do it at runtime.
Looks like there is a space between the property and property value. Use below one instead.java -D:java.library.path="c:\jrii\jrii.dll" Hellonull
i'll tell u ehat i just tried..
i've added jri.jar to the library of my project.
thenon the command promt i typed the following
java -d java.library.path="c:\jri\jri.dll"
it throws a NoClassDefFound exception.
the jri.dll as well as jri.jar files are present in the c:\jri folder.
> it throws a NoClassDefFound exception.What class? Paste the stack trace!
java -Djava.library.path=c:/jri/jri.dllNo space between -D and the property name !Message was edited by: java_2006
Please copy and paste the exact error message you get when you run that command.Message was edited by: kevjava
Read this JNI tutorial; which gives a step-by-step approach. http://java.sun.com/developer/onlineTraining/Programming/JDCBook/jniexamp.html#exampSet PATH variable to the directory where you have your dll files.
this is what i got right now... what does this mean?
C:\PROGRA~1\JAVA\JDK5\BIN>java -Djava.library.path="c:\jri\jri.dll"
Usage: java [-options] class [args...]
(to execute a class)
or java [-options] -jar jarfile [args...]
(to execute a jar file)
where options include:
-clientto select the "client" VM
-serverto select the "server" VM
-hotspotis a synonym for the "client" VM [deprecated]
The default VM is client.
-cp <class search path of directories and zip/jar files>
-classpath <class search path of directories and zip/jar files>
A ; separated list of directories, JAR archives,
and ZIP archives to search for class files.
-D<name>=<value>
set a system property
-verbose[:class|gc|jni]
enable verbose output
-versionprint product version and exit
-version:<value>
require the specified version to run
-showversion print product version and continue
-jre-restrict-search | -jre-no-restrict-search
include/exclude user private JREs in the version search
-? -helpprint this help message
-Xprint help on non-standard options
-ea[:<packagename>...|:<classname>]
-enableassertions[:<packagename>...|:<classname>]
enable assertions
-da[:<packagename>...|:<classname>]
-disableassertions[:<packagename>...|:<classname>]
disable assertions
-esa | -enablesystemassertions
enable system assertions
-dsa | -disablesystemassertions
disable system assertions
-agentlib:<libname>[=<options>]
load native agent library <libname>, e.g. -agentlib:hprof
see also, -agentlib:jdwp=help and -agentlib:hprof=help
-agentpath:<pathname>[=<options>]
load native agent library by full pathname
-javaagent:<jarpath>[=<options>]
load Java programming language agent, see java.lang.instrument
C:\PROGRA~1\JAVA\JDK5\BIN>
> Read this JNI tutorial; which gives a step-by-step
> approach.
> http://java.sun.com/developer/onlineTraining/Programmi
> ng/JDCBook/jniexamp.html#examp
>
> Set PATH variable to the directory where you
> have your dll files.
Thanks, I couldn't find that page for some reason. I'm Google-challenged this early in the morning, I suppose.
PLEASE try this instead :java -Djava.library.path=c:/jri/jri.dll
> C:\PROGRA~1\JAVA\JDK5\BIN>java
> -Djava.library.path="c:\jri\jri.dll"
> Usage: java [-options] class [args...]
>(to execute a class)
That's the usage message :). Have to list your class to run as a parameter:
java -Djava.library.path="C:\jri\jri.dll" com.something.MyClass
Edit:
Try doing the PATH thing and running that after doing a:
PATH=%PATH%;C:/jri/
(as suggested by BalaSubrahmanyam)
> Thanks, I couldn't find that page for some reason.> I'm Google-challenged this early in the morning, I> suppose. http://java.sun.com/developer/onlineTraining/Programming/JDCBook/jniexamp.html Guess now I pasted the link properly.
> http://www.java.sun.com/developer/onlineTraining/Programming/JDCBook/jniexamp.html > Guess now I pasted the link properly.Oh, I just meant that I was previously looking for that page as well and couldn't locate it. Your link was good. Thanks again.
how do i set the PATH variable?i mean the syntax to do that..i read the tutorial on jni.. they've given methods tocreate a dll..bt i already have the dll and the jar file.. i just need to place it in a place where it'll be read by the jvm..
java -Djava.library.path=C:/jri/jri.dll
ya.. i just tried doing that..
its not giving any erroron the command promt after doing that..
but my project on netbeans still doe not run.it gives the following error
Cannot find JRI native library!
Please make sure that the JRI native library is in a directory listed in java.library.path.
java.lang.UnsatisfiedLinkError: no jri in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1682)
at java.lang.Runtime.loadLibrary0(Runtime.java:822)
at java.lang.System.loadLibrary(System.java:993)
at org.rosuda.JRI.Rengine.<clinit>(Rengine.java:9)
at rtest.main(rtest.java:66)
Java Result: 1
what is going wrong with it?
I would try to get it running manually before working it through Netbeans. What does it do when you try it on the command line?
Usually it means that you didn't setup the necessary environment variables properly or the JRI library is not where it is expected to be. The recommended way to start JRI programs is to use the run script which is generated along with the library. It sets everything up and is tested to work. If you want to write your own script or launcher, you must observe at least the following points:
* R_HOME must be set correctly
* (Windows): The directory containing R.dll must be in your PATH
* (Mac): Well, it's a Mac, so it just works ;).
* (unix): R must be compiled using --enable-R-shlib and the directory containing libR.so must be in LD_LIBRARY_PATH. Also libjvm.so and other dependent Java libraries must be on LD_LIBRARY_PATH.
* JRI library must be in the current directory or any directory listed in java.library.path. Alternatively you can specify its path with
-Djava.library.path= when starting the JVM. When you use the latter, make sure you check java.library.path property first such that you won't break your Java.
* Depending on your system, the R verison and other features you want to use, you may have to set additional settings such as R_SHARE_DIR, R_INCLUDE_DIR and R_DOC_DIR.
Again, I don't think you want to worry about all of the above - just use the start script!
i know wht u have just sent about the run script..
i do not know the way to execute that script. on windows.. the script is actually a sort of shell script that sets up the library path by itself..
if anyone can tell me how to execute that run script on windows then i'll do that as well
can anyone give me their email id.. i'll mail u the dll file the jar file and the code..u can see the errors urself..
Did you get the jri to work with netbeans?
I am having the same problems, not with windows but with ubuntu. No matter how many different ways I try to set the JRI.jar on the runtime classpath it won't find it. There is no place I can find to add vm arguments using Netbeans 5.5 and Visual Web Pack with Sun Application Server 9. Under Project -> Properties -> Run there is no place for runtime args, even though the documentation says there should be. Very frustrating as this works in Eclipse just fine...
If anyone has solved this little Netbeans-JRI.jar problem please post.
Thanks,
taivo
taivoa at 2007-7-21 18:24:57 >
try java -djava.library.path="C:\jri\"
