I have installed PyDev successfully, I have python 3.4.0 installed successfully and the folder containing python.exe is in my path and I can run it from the command line.
However, when I go to window\preferences\pydev\interpreters\python interpreter and select 'quick auto-config' to configure it using normal python I get an error saying 'auto configurator could not find a valid interpreter... Note the system environment variables used for Jython are PATH and PYTHONHOME.'
Unless this is a bug in the text I am not selecting Jython (I get a different error if I select IronPython, btw, so this is not a generic error message).
The trace is as follows:
Errors getting info on discovered interpreter(s).
See error log for details.
java.lang.RuntimeException: java.io.IOException: Cannot run program "python": CreateProcess error=2, The system cannot find the file specified
As I say, python.exe is in my path.
You have to install the actual python package separately from here https://www.python.org/download
Close LiClipse/Eclipse => Download Python Here: https://www.python.org/download
=> reopen LiClipse => Auto Config for the interpreter Will WORK!
I found the answer, but I'll leave this up in case anyone else gets it. It's a pretty stupid auto config option if you ask me ;)
In the higher level window\preferences\pydev\interpreters\ preference you need to untick jython and ironpython.
No idea why given I selected the Python sub-preference specifically.
Related
Running GraphDB on windows.
I right clicked the icon, clicked settings. Tried to set Xmx512Mb, (so I mistyped, should have been Xmx512M). Now trying to run GraphDB says "Failed to create JVM", even after uninstalling and re installing.
Where can I find and undo what I typed in the settings if the UI is not starting up?
In other words, where is this configuration stored?
I removed AppData/Roaming/GraphDB and AppData/Local/GraphDB Free
Just to generalize it, If you set an invalid Java option parameter, GraphDB Free may fail to start after the application restart. The only way to solve this problem is to remove the invalid line from the file:
%userprofile%\AppData\Roaming\com.ontotext.graphdb.free\packager\jvmuserargs.cfg (Windows)
~/Library/Application Support/com.ontotext.graphdb.free/packager/jvmuserargs.cfg (Mac OS)
~/.local/com.ontotext.graphdb.free/packager/jvmuserargs.cfg (Linux).
In addition to Damyan's answer there is a GraphDB Free.cfg file in C:\Users\User\AppData\Local\GraphDB Free\app\ which you can edit.
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.
Recently I worked on a project done in the network visualization and analysis software Gephi, and I saved it with the ".gephi" extension. However, when I try to reopen the file, it gives the following error message:-
"The project file couldn't be opened. Please check the file has .gephi extension.
XMLStreamException - ParseError at [row,col]:[1,1]
Message: Premature end of file."
I'm a beginner in Gephi and only an amateur programmer. I do not understand this error message, and thus have no ideas on how to resolve it. I tried updating Gephi to the latest version. I also tried to open the file from within Gephi. Neither of those steps have resolved the problem. Can anyone help me out with this, please?
The error message "premature end of file" means that the xml file was not complete. I suppose that the whole file is empty or just the xml part of the file. so maybe the file got corrupted while saving.
Can you try to open the file with notepad or a hexeditor to verify that it has some content?
There must be some bug on the gephi files writing or reading process.
In order to identify the problem it would help if you can post a gephi log file when each error happens.
You can find the log file on gephi user directory (check http://wiki.gephi.org/index.php/Troubleshooting)
For example in Windows 7 the path is C:\Users\Your_User\AppData\Roaming.gephi\dev\var\log\messages.log
Also, if you can share the files, it will be easier to fix.
This could be related to an open bug where Java6 is used to save the gephi file and then Java7 is used to load the file, say on a different machine.
The jdk used by Gephi can be specified in /etc/gephi.conf or alternatively it can be specified as a parameter --jdkhome when launching Gephi.
The problem is with java and javac:
If you created your gephi file with open java-6-openjdk (for example) and then you sitch your java to java-7-openjdk, then this problem surges.
I fix my gephi returning to the same java and javac executables in Linux by:
(In terminal)
sudo update-alternatives --config java
and then
(In terminal)
sudo update-alternatives --config javac
Hope this can help!