I am currently using Python3, java8, jpype 0.6.3 version on windows10.
jpype.getDefaultJVMPath() fails with an error :
raise JVMNotFoundException("No JVM shared library file ({0}) "
jpype._jvmfinder.JVMNotFoundException: No JVM shared library file (jvm.dll) found. Try setting up the JAVA_HOME environment variable properly.
My JAVA_HOME points to C:\Program Files (x86)\Java\jdk1.8.0_241
If I try starting JVM directly by passing the jvm.dll path("C:\Program Files (x86)\Java\jdk1.8.0_241\jre\bin\client\jvm.dll) python program crashes.
I have already given executable permission to .dll file
Could anyone please help me fix this issue for the above system specifications
It is possible that your JVM architecture (32 bit) does not match your Python (64 bit). This would cause the symptoms you are describing.
It turns out that the shared code I was using required a specific version of one of the drivers. I still don't understand it all enough to explain why that was but with the older driver version (from a colleague) everything works!
from jpype import *
startJVM("/home/user_name/Downloads/ideaIC-2022.2.3/idea-IC- 222.4345.14/jbr/lib/server/libjvm.so", "-ea")
java.lang.System.out.println("hello world")
shutdownJVM()
This works for me
set the path manually
startJVM("/home/user_name/Downloads/ideaIC-2022.2.3/idea-IC- 222.4345.14/jbr/lib/server/libjvm.so", "-ea")
If this path is not correct for you
Search for this file libjvm.so inside partition computer on linux
Then copy the file path
Related
I'm learning Jackrabbit and following the documentation to run a standalone server. When I run the command java -jar jackrabbit-standalone-2.16.2.jar and access localhost:8080 on my browser, I get a 500 error saying:
org.apache.jasper.JasperException: PWC6345: There is an error in invoking javac. A full JDK (not just JRE) is required
What am I doing wrong?
Note: I have set my jdk/bin path in my environment variables.Also, my javac command is working properly. I've jdk version 1.8.0_74 and Jackrabbit version 2.16.2
Edit: According to this answer, I tried setting my jdk to my installed jres in eclipse but that didn't solve my problem.
Running the latest jackarabit standalone jar(2.17.3) in my machine(windows 10 and java home pointing in java8 jdk) produced the same errors.
I then executed the rar with java -Djava.home="%JAVA_HOME%" -jar jackrabbit-standalone-2.17.3.jar. Although I got the same error in browser I was able to see errors in the console where I invoked the running command.
One of these error was
can't open C:\Progra~1\Java\jdk1.8.0_144\lib\tzmappings.
Searching my java installation I found that the missing files, are located under jre's installation folder.
So I eventually made the standalone jar to work with:
java -Djava.home="%JAVA_HOME%\jre" -jar jackrabbit-standalone-2.17.3.jar
The initial error is a bit misleading as it refers to javac and not to the missing files.
The whole thing seems to be a bug for me. Please give a try to my workaround and if it works for you consider filing a bug in Jackrabbit's issue tracker platform.
jackrabbit-standalone uses JSP. JSP needs compilation. Compilation needs JDK.
Before running java -jar jackrabbit-standalone-2.16.2.jar do you check your JAVA_HOME, and make sure it refers to a fully-fledged JDK? In short, the bin directory should have javac.
I found that there was another variable in the Path environment System variable preceding my %JAVA_HOME%\bin variable.
You don't have to delete the other variable, but move it down (or move %JAVA_HOME\bin up) to correct the load order.
After extracting the Pentaho zip file I downloaded. I set my class path to JDK 1.7.0. But, upon running the Spoon.bat file I keep getting the statement: "Unable to launch your Java Virtual Machine (JVM)." How do I resolve this problem ?
NB: I have configured JAVA_HOME, JRE_HOME as stated by similar previously answered questions.
Note that Pentaho7 requires java 8.
In any case, Set the PENTAHO_JAVA_HOME=dir, where dir is the directory that contains the /bin/java.exe executable.
Alternative:
The spoon.bat [resp spoon.sh] runs first the set-pentaho-env.bat to find a suitable java. Edit this file to know in which order it searches for it. So do like me, when nobody looks at you, edit this file manually, and set _PENTAHO_JAVA_HOME and _PENTAHO_JAVA manually.
To check: In a command line shell, cd to your PDI install directory and type spoon.bat. It writes something like start "Spoon" "**some\directory**\javaw.exe" more stuff. Check that you can type **some\directory**\javaw.exe -version in your shell.
If not: in the same directory, type set-pentaho-env.bat. It writes down the PENTAHO_JAVA and PENATHO_JAVA_HOME thAt spoon will use. Edit that file until %PENTAHO_JAVA%\java.exe -version and %PENTAHO_JAVA_HOME%\java.exe -version answers the appropriate version.
In my case (for PDI 9.2.x), installing an Oracle JDK 8 solved the issue (no need to set the Java home folder explicitly)
Here is the related error its showing:
java.exe is not a recognized file as an internal or external command,
operable or external command
errorlevel=9009
i was getting the same error on WIndows 8.1(64 bit) and checked java path but it was ok
so i just run my jmeter.bat with Run as Administrator and it worked for me
Many operating systems have an environment variable such as PATH that contains a list of directories (or folders) to be searched when looking for a command to execute. Commands that can be found via the PATH are commonly called external commands. The program that reads the command line or the batch file and invoked the commands may have a number of built in commands, these are commonly called internal commands.
I suggest you examine the PATH (or equivalent) set when your java command executes from the command line and also when execution is attempted from the batch file. Compare the two and make sure the directory containing your java.exe is in the PATH.
Does not work with Java 9 beta:
Running:
C:\java -version
Gives:
java version "9-ea"
Just go into command line and run:
java -jar ApacheJMeter.jar
Set the correct Java Path (installed in your system) in Computer -> Advanced System settings -> Environment Variables -> Ok -> System Variables -> Path
I got the same issue and resolved by following the above steps.
I tried everything, this eventually worked.
Within System Variables:
PATH = "C:\WINDOWS\system32;C:\WINDOWS;C:\Program Files\Java\jdk1.8.0_101\bin"
May help someone.
This error occurs due to the path has not been set properly.
Either you can set it in environmental varialables or right click jmeter .bat file,choose edit set the path their,for reference see the jmeter.apache.org user manuals.
For me, my Java path has a space in it and jmeter said it can't find Java
/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home
.. I looked at the jmeter.sh script and saw it got the path from "Plugin-Ins" .. onward. I tried just commenting out the exit command after that check in the script .. and then I was able to run jmeter.
So apparently the validation logic has a bug, where the error message about can't find java is in fact not true (if Java is indeed set up correctly), so it can be ignored.
For windows 8.1 Users:
Error when trying to run jmeter.bat
Error message:
Not able to find Java executable or version. Please check your Java installation. errorlevel=2
Press any Key to continue
Resolution:
Right Click jmeter.bat and Run as Administrator.
This worked for me, hope this helps. Good luck
Set the correct JM_LAUNCH variable to java.exe
For Windows XP users set Java environment by following the steps here:
http://www.tutorialspoint.com/jmeter/jmeter_environment.htm
Note the path depends on your installed JDK.
And download the file from:
https://svn.apache.org/repos/asf/jmeter/trunk/bin/jmeter.bat
Then replace your jmeter.bat with the downloaded file.
If you have installed Java and still you get this error, please set the java_home path to below using typing below command in terminal:
export JAVA_HOME="/Library/InternetPlugIns/JavaAppletPlugin.plugin/Contents/Home"
Since I run many versions of Java.. I modified jmeter.bat.
rem JM_START - set this to "start" to launch JMeter in a separate window
rem this is used by the jmeterw.cmd script.
rem
rem =====================================================
setlocal
rem Minimal version to run JMeter
set MINIMAL_VERSION=1.8.0
set PATH=%PATH%;C:\Program Files (x86)\IBM\Java80\jre\bin <<< add This line to jmeter.bat
Copied the JAVA executable from Installed version of Java from C:\Program FilesJava\jdk1.8.0_191\bin and pasted in the folder where the jmeter bat resides and it worked for me.
Not exactly the same issue but somebody might find it helpful
Do not double click jmeter.bat but instead ApacheJMeter.jar in the same directory
For me jmeter.bat run but for a brief moment closing almost immediately and not prompting any error. Above workaround allowed me to start working
if JAVA -version shows as blank or empty in the command prompt (CMD) then you need to clear the all java paths in environment variable and again add JAVA_HOME=C:\Program Files\Java\jdk-11.0.15.1
path= C:\Program Files\Java\jdk-11.0.15.1\bin;
if you see C:\Program Files\Common Files\Oracle\Java\javapath; like this remove this
and try in new CMD prompt then Java -version will work.
Background
I have a C++ program that loads a JVM internally and then uses JNI to call code in the JVM. This runs on multiple platforms including AIX. However, when starting the JVM on AIX everything is fine until I call some code that needs to access native code supplied as part of the JRE. I then run into this error message:
java.lang.UnsatisfiedLinkError: net (Not found in com.ibm.oti.vm.bootstrap.library.path)
The problem is that the JVM cannot find the shared library libnet.so. If I dump the value of the com.ibm.oti.vm.bootstrap.library.path system property from Java code running in the JVM I see that by default (i.e. not me setting it) it has the value:
<jre-base-dir>/lib/ppc/default:<jre-base-dir>/lib/ppc
From the error message I guessed it would be a good idea to change this to include the dir where libnet.so is located. However, this shared library is in <jre-base-dir>/lib/ppc which is already in the path set by com.ibm.oti.vm.bootstrap.library.path, so it seems the error message is incorrect.
Experimenting with different values for this system property makes me believe that it is used by the AIX j9vm to load the internal JVM shared libraries only (like libjclse7b_26.so) but not the native code implementations (like libnet.so).
My fix
To fix my problem I had to change the LIBPATH environment variable (which is AIX the equivalent of LD_LIBRARY_PATH in e.g. Linux).
$ LIBPATH=<jre-base-dir>/lib/ppc:<jre-base-dir>/lib/ppc/j9vm ./myprogram
Questions
Can anyone shed some light on the real purpose of the system property com.ibm.oti.vm.bootstrap.library.path on AIX when using the j9vm JVM?
Is my fix the correct way to solve the problem or should I use some other system property? (I have tried java.library.path but it does not seem to help.)
In my case it show error message:
java.lang.UnsatisfiedLinkError: awt (Not found in com.ibm.oti.vm.bootstrap.library.path)
I fix my problem by
copy /usr/java6_64/jre/lib/ppc64/libawt.so to /usr/java6_64/jre/lib/ppc64/j9vm and create symbolic link libawt.a to libawt.so
I set LD_LIBRARY_PATH
LD_LIBRARY_PATH="/usr/java6_64/jre/lib/ppc64:/usr/java6_64/jre/lib/ppc64/j9vm"; export LD_
LIBRARY_PATH
I've a problem to execute a program with Mono in the terminal, (mono program.exe). An error appears : "System.DllNotFoundException : libpjsipDll.so "
however my library exists and I've setted my 2 environment variables : LD_LIBRARY_PATH and MONO_PATH in the directory where the file is.
I don't understand why this error occured ?
Anyone has an idea ?
I've :
ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.8, stripped (CPU architecture)
ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV),dynamically linked, not stripped (third-party lib)
I try MONO_LOG_LEVEL="debug" MONO_LOG_MASK="dll".
and I obtain an : undefined symbol : Pa_GetErrorText
I try to install PortAudio but I doesn't work always :-(
Thanks in advance.
Narglix
First of all, make sure that the letter casing is correct in that the library you are calling and the assembly on disk have the same case. Linux is picky about it.
I assume that you are using P/Invoke DLLImport? What is the actual code you are using here? You library (libpjsipDll.so) is not managed code of course.
Is not a problem about loading, is a problem about another dependency dll, just run this code and make sure the libpjsipDll.so is where the callingApp.exe is executing.
//I tried this in ubuntu $ sudo apt-get install libssl0.9.8:i386
I discovered that running my App like this:
$ MONO_LOG_LEVEL=debug mono MyApp.exe
Here is my question, where you can find adittional info:
MonoDevelop and libpjsipDll.so library on Ubuntu. System.DllNotFoundException