When I try opening Eclipse, a pop-up dialog states:
Failed to load the JNI shared library "C:/JDK/bin/client/jvm.dll"`.
Following this, Eclipse force closes.
Here's a few points I'd like to make:
I checked to see if anything exists at that path. It does exist.
My Eclipse and Java SE Development Kit are both 64-bit. I checked my system, and it can handle 64-bit.
I've searched for this problem on Google and on Stack Overflow, and the only answer I found was to download the 32-bit versions of JDK and Eclipse.
Downloading the 32-bit versions is something I only want to do as a very last resort.
What would be suggested to solve this issue?
You need a 64-bit trio:
64-bit OS
64-bit Java
64-bit Eclipse
Working pairings of OS, JDK and Eclipse:
32-bit OS | 32-bit JDK | 32-bit Eclipse (32-bit only)
64-bit OS | 32-bit JDK | 32-bit Eclipse
64-bit OS | 64-bit JDK | 64bit Eclipse (64-bit only)
I had several JDKs and JREs installed.
Each of them had their own entry in the PATH variable, all was working more or less.
Judging from the PATH variables, some installations were completely useless, since they were never used. Of course, the "inactive" Javas could be referenced manually from within Eclipse if I needed, but I never did that, so I really did not need them. (At least I thought so at that time...)
I cleaned up the mess, deinstalled all current Java's, installed only JDK + JRE 1.7 64-bit.
One of the Eclipse 'installations' failed afterwards with the Failed to Load the JNI shared Library and a given path relative to the fresh installed JDK where it thought the jvm.dll to be.
The failing Eclipse was the only one of all my IDEs that was still a 32-bit version on my otherwise all-64-bit setup.
Adding VM arguments, like so often mentioned, in the eclipse.ini was no use in my case (because I had only the wrong JDK/JRE to relate to.)
I was also unable to find out how to check if this Eclipse was a 32-bit or 64-bit version (I could not look it up in the Task Manager, since this Eclipse 'installation' would not start up. And since it had been a while since I had set it up, I could not remember its version either.)
In case you use a newer JDK and a older JRE you might be in for trouble, too, but then it is more likely a java.lang.UnsupportedClassVersionError appears, IIRC.
Make sure your eclipse.ini file includes the following lines.
-vm
C:\path\to\64bit\java\bin\javaw.exe
My eclipse.ini for example:
-startup
plugins/org.eclipse.equinox.launcher_1.1.1.R36x_v20101122_1400.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.2.R36x_v20101222
-product
org.eclipse.epp.package.java.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256M
-showsplash
org.eclipse.platform
-vm
C:\Program Files\Java\jdk1.6.0_32\bin\javaw.exe
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-Dosgi.requiredJavaVersion=1.5
-Xms40m
-Xmx512m
Use OS and Eclipse both 64 bit or both 32 bit keep same and config eclipse.ini.
Your eclipse.ini file can be found in your eclipse folder.
I had same problem
I resolved it by installing 64 bit JVM from
http://www.java.com/en/download/manual.jsp
This error means that the architecture of Eclipse does not match the architecture of the Java runtime, i.e. if one is 32-bit the other must be the same, and not 64-bit.
The most reliable fix is to specify the JVM location in eclipse.ini:
-vm
C:\Program Files (x86)\Java\jdk1.7.0_55\bin\javaw.exe
Important: These two lines must come before -vmargs. Do not use quotes; spaces are allowed.
Another option is:
Create a shortcut to the Eclipse.exe. Open the shortcut and change the target to:
"C:\Program Files\eclipse\eclipse.exe" -vm "c:\Program Files\Java\jdk1.7.0_04\bin\javaw.exe"
For your installation, make sure the locations point to the correct Eclipse installation directory and the correct javaw.exe installation directory.
(The 64/32 bit versions of Eclipse and Java need to be the same, of course.)
I have multiple versions of Java installed, both Sun JDK & JRockit, both 32 bit and 64-bit, etc. and ran into this problem with a fresh install of 64-bit Eclipse for Java EE (JUNO).
What did NOT work:
64-bit trio as suggested by Peter Rader:
I'm using 64-bit Eclipse on 64-bit OS (Windows 7).
I ensured Sun JDK 7 64-bit was the default java version. When I typed "java -version" from command line (cmd.exe), Sun JDK 7 64-bit was returned...
java version "1.7.0"
Java(TM) SE Runtime Environment (build 1.7.0-b147)
Java HotSpot(TM) 64-Bit Server VM (build 21.0-b17, mixed mode)
This did not resolve the problem for me.
What DID work:
Adding -vm option to eclipse.ini as suggested by Jayesh Kavathiya:
I added the following to eclipse.ini:
-vm
C:/apps/java/jdk7-64bit/bin/javaw.exe
Note:
I did not have to uninstall any of the various versions of JDK or JRE I have on my machine.
For a missing jvm.dll file, we can provide the path of the dll file in eclipse.ini file as
-vm
C:\Progra~1\Java\jdk1.6.0_38\jre\bin\server\jvm.dll
Here it is important to remove any space in the path and the double quotes.
It worked for me when i removed the quotes and space.
I hope it helps someone.
I had a similar problem. It was solved doing the following.
Move Eclipse to Program Files (not to Program Files (x86)).
Remove the path to the 32-bit version of Java from the 'path' environment variable.
I have both versions of Java installed, but Eclipse kept trying to use the 32-bit one.
Sure, you need to have a compatible version of JDK and Eclipse, but you also need to add in the eclipse.ini file the below lines:
-vm
yourdrive\java\bin
Make them the first two lines of your eclipse.ini file.
As many folks already alluded to, this is a 32 vs. 64 bit problem for both Eclipse and Java. You cannot mix up 32 and 64 bit. Since Eclipse doesn't use JAVA_HOME, you'll likely have to alter your PATH prior to launching Eclipse to ensure you are using not only the appropriate version of Java, but also if 32 or 64 bit (or modify the INI file as Jayath noted).
If you are installing Eclipse from a company-share, you should ensure you can tell which Eclipse version you are unzipping, and unzip to the appropriate Program Files directory to help keep track of which is which, then change the PATH (either permanently via (Windows) Control Panel -> System or set PATH=/path/to/32 or 64bit/java/bin;%PATH% (maybe create a batch file if you don't want to set it in your system and/or user environment variables). Remember, 32-bit is in Program files (x86).
If unsure, just launch Eclipse, if you get the error, change your PATH to the other 'bit' version of Java, and then try again. Then move the Eclipse directory to the appropriate Program Files directory.
The answers above me got me tempted so much, that I decided to dry run all the possible combinations with OS, Eclipse and JVM trio. Anyway, whoever is digging down and reading my post, check the following as a hot spot (I am Windows 7 user).
You understand Program Files and Program File (x86) are two different folders... x86 stands for the 32-bit version of programs and the former is the 64-bit version.
If you have multiple versions of Java installed with different bitness and release versions, which is bound to happen with so many open source IDEs, managers, administrative consoles, the best option is to set the VM argument directly in the eclipse.ini file. If you don't, Eclipse will go crazy and try searching itself which is not good.
Alternatively, get the same "bit" version of JRE and Eclipse and then create a new shortcut with the below target (replace the installed JRE and Eclipse location/path):
"C:\studio\eclipse.exe" -vm "C:\Program Files\Java\jre7\bin\server\jvm.dll" eclipse.vm="C:\Program Files\Java\jre7\bin\server\jvm.dll" java.home="C:\Program Files\Java\jre7" java.runtime.version=1.7.0
That should do the trick.
You can solve that problem as many other replicated. You need that Eclipse and the JDK be 32-bits or both on 64-bits. The architecture of the OS doesn't matter while the others remains on the same type of arquitecture.
One of the easy ways to resolve it is to copy the jre folder from installed the JDK into the Eclipse installation folder. Make sure that JDK you copy from is the same architecture as your Eclipse installation.
I had to configure my machine that way, because I run both Eclipse and Appcelerator Titanium Studio on my machine. The Studio needs 32-bit Java, while Eclipse needs 64-bit.
Yes, just make sure your versions of Eclipse and JDK are both 64-bit. Just to make sure everything is correct uninstalled JDK and install it in Program Files and not in Program Files (x86). At least that resolved my problem.
Just check the PATH environment variable. In My Computer - > Properties -> Advanced System settings -> Environment Variables -> (left upper window "User Variables for "some name of PC"" ) just check the PATH variable. If it doesn't exist create it with the following -- > C:\Program Files (x86)\Java\jre7\bin <--
I was faced with the same problem after had updated my Eclipse. I've found that the path asked 64-bit version, but I had the 32-bit in dif path. It was helpful for me. P.S.: I have a 64-bit OS, 32-bit JRE and 32-bit Eclipse. All works fine :)
You should uninstall all old [JREs][1] and then install the newest one... I had the same problem and now I solve it. I've:
Better install Jre 6 32 bit. It really works.
Downloaded 64 bit JVM from site and installed it manually and updated the system path variable. That solved the issue.
Default JVM is installed in my system was in "C:\Program Files
(x86)\Java\jre7"
Manually installed JVM got installed in
"C:\Program Files\Java\jre7" and after updating this pate to system
path variable it worked.
Thank you misterfrb, I realised that Eclipse was giving this error, because I had just installed Oracle 10g Developer suite, and it was looking for the jvm.dll file in the C:\DevSuiteHome_1 folder (I must have opted to install JDK again along with developer suite).
After removing the DevSuiteHome lines from the paths variable and adding the correction location for 64-bit jvm.dll (not sure if this was necessary, didn't try without), Eclipse worked again, and Developer suite still does too.
Simple, I have a 64-bit OS, 32-bit Eclipse and both JDK 32 & 64 installed... I just uninstalled the 64-bit JDK and Eclipse is working fine..
I had the same issue after upgrading from Java 6 to Java 7. After I removed Java 6 (64 bit) and reinstalled Java 7 (64 bit), Eclipse worked. :)
It is crucial to add the -vm parameter and its value on 2 lines AT THE BEGINNING of the eclipse.ini
-vm
C:\Program Files\Java\jdk1.7.0_45\bin\javaw.exe
You have change proper version of the JAVA_HOME and PATH in environmental variables.
I want to previde another solution for this error, especially for who want to use 32-bit and 64-bit Eclipse in one system.
Eclipse will startup using the JRE/JDK in jre sub-directory if it exists. (STS or other eclipse based IDE also support this feature...)
The solution is create directory junction using mklink.exe command which exist in windows vista or newer version (junction.exe offer similar function for Windows 2000/XP)
Open the command line windows and exeute following command:
mklink /j "$ECLIPSE-HOME/jre" "$JDK_or_JRE_home"
Of course, if the Eclipse is for 64-bit Windows, the architecture of JDK/JRE must be the same.
Assume:
Eclipse for windows x86_64 is installed in d:\devTool\eclipse
JDK for windows x64 is installed in C:\Program Files\Java\jdk1.8.0
The command for creating the jre folder will be:
mklink /j "d:\devTool\eclipse\jre" "C:\Program Files\Java\jdk1.8.0"
BTW, delete directory junction will NOT delete any file. If you create a wrong link, you can delete it using file explorer or rmdir command.
rmdir "d:\devTool\eclipse\jre"
Make sure you are starting Eclipse with Administrator rights.
If you use whole 64-bit trio and it still doesn't work (I've come to this problem while launching Android Monitor in Intellij Idea), probably wrong jvm.dll is being used opposed to what your java expects. Just follow these steps:
Find the jvm.dll in your JRE directory:
C:\Program Files\Java\jre7\server\bin\jvm.dll
Find the jvm.dll in your JDK directory:
c:\Program Files\Java\jdk1.7.0_xx\jre\bin\server\
Copy the jvm.dll from JRE drectory into your JDK directory and overwrite the jvm.dll in JDK.
Don't forget to make a backup, just in case. No need to install or uninstall anything related to Java.
The same occurred to me. I had 64-bit Eclipse, but my JDK was 32-bit. So I installed the 64-bit version and it's OK right now.
I'm not sure why but I had the jre installed into my c:\windows directory and java.exe and javaw.exe inside my windows\system32 directory.
Obviously these directories were getting priority even AFTER adding the -vm flag to my eclipse.ini file.
Delete them from here fixed the issue for me.
On the download page of Eclipse, it should be written "JRE 32 bits" or "JRE 64 bits" and not "Windows 32 bits" or "Windows 64 bits".
Be sure to use the correct version compatible with your JDE, as answered previously.
How can I specify that in order to run a certain java application that I created you need to have 32 bit JRE installed on your system? Further how can I specify that the java application is to use the 32 bit JRE and not the 64 bit JRE if they are both installed?
Background:
I have created an application that uses a 3rd party 32 bit only library. The application can not run in a 64 bit JRE.
I am going to be distributing this application to a lot of computers in my company, so I need to be able to in code or in the export process, specify the required JRE.
I am using eclipse, Kepler to develop and build the java application.
The idea of java is always compile once and run everywhere, regardless of OS, cpu architecture etc, so you might be heading the wrong direction here.
But nevertheless here are some system properties you might / not find helpful. I've listed the property key and value I have when I check it (I run Oracle JDK on Win7 64)
java.vm.name: Java HotSpot(TM) 64-Bit Server VM
sun.arch.data.model: 64
sun.cpu.isalist: amd64
To use any of those just do
String vmname = System.getProperty("java.vm.name");
You can't do it directly in Java, since you're in a running JVM at that point. My solution was to write a dos batch script to set the JAVA_HOME and add %JAVA_HOME%\bin at the front of the PATH. For example, I have sethome.bat which contains
#echo off
set "JAVA_HOME=c:\Program Files (x86)\Java\jre6"
set "PATH=%JAVA_HOME%\bin;%PATH%"
Then I use
call "%SERVICE_HOME%\sethome"
"%JAVA_HOME%\bin\java" -version
echo If this does not look correct press CTRL-C to cancel otherwise
pause
You cannot generally make sure what program runs your jar. I can pass the jar to acroread, or zip or whatever, and you can't do anything about it.
So, I'd just try to load the library, and do a proper error/exception handling. Who knows? Maybe your client has meanwhile replaced that library with a 64bit version, without you knowing about it? SO, this: loading, and if it won't aborting with a graceful eror message is the only sensible thing.
I am using Windows 7 on my laptop. I am working with jpcap libraries which work only on 32-bit JDK. Having both 32 and 64 bit JDKs installed on my machine. How can I switch between 64-bit and 32-bit JDK?
I tried changing the %JAVAHOME% and %PATH% environment variables, but it didn't work. Should I change anything in the registry?
#Srikant Sahay, Thank you very much! It did work on widnows 8.1 64 bit OS.
I am able to Switch between 32-bit and 64-bit JDK platform on Windows 8.1 on demand. The trick, as Srikant suggested, is to set the path before all other path variables. Make sure you put fist in the path variable.
java -d32 -version ( or simply )
java -version
java version "1.7.0_51"
Java(TM) SE Runtime Environment (build 1.7.0_51-b13)
Java HotSpot(TM) Client VM (build 24.51-b03, mixed mode, sharing)
However, only one instance works at a time. Either you choose the 32 bit version or the 64 bit version. So, if you type "java -d64 -version" you will get
Error: This Java instance does not support a 64-bit JVM.
Please install the desired version.
Therefore, if you instead want a 64bit JVM you should put the JDk installation folder(in my case "C:\Program Files\Java\jdk1.7.0_51\bin" since the OS is 64 bit by default) first in the path variable.
cheers!
You can either set your path, or switch between JDK's in your IDE. Personally I use JetBrains IntelliJ IDEA and set the JDK via the IDE.
Setting via IDE:
From within a project:
click File -> Project Structure
Select Project under Project Settings
Select the Project SDK. If yours is not listed, click New -> JDK and browse for the JDK
From a new project:
Click File -> New Project
Select the Project SDK. If yours is not listed, click New -> JDK and browse for the JDK
If you want to set your path:
Follow the directions listed on the java.com site.
Keep in mind that your jar will run using whatever version of java is specified in your PATH.
If your PATH variable is not working, try cleaning up your path variable by removing unnecessary entries and rebooting. After reboot add Java to the path and reboot again.
If your still having issues, try executing using the absolute path of the java version your trying to use to ensure it works. If it does work, check your path variable against it to ensure it is accurate.
No, don't touch the registry. Each running Java application gets a single unique JVM instance. So a single java program cannot run some parts of the code in one JVM and other parts of the code in another JVM, as far as I know. You can, however, choose which JRE a particular java program runs in, so you can run the entire jpcap program in your 32 bit java version. Use a startup script (batch file) that points to the exact location of java.exe. When you run "java MyClassName" it's really just finding the java executable on the PATH environment variable, so by explicitly specifying your path, you get to choose your version. In other words, if you run a java program using "java MyClassName" (or if a program on your machine does so) it will use the java.exe application found on your PATH environment variable. Applications themselves can use whatever environment variables they choose: typically the ones used for java are JAVA_HOME and JRE_HOME. So you might want to try setting both of those and then trying to run your program again.
Set the path of your java in System Environment Variables PATH variable. Set it to be before any other path (even System 32 if java or javaw is present there).
I download the Gurobi package for linear programming. I import the corresponding gurobi.jar package. Then run the example program. Then it appears the following errors:
Exception in thread "main" java.lang.UnsatisfiedLinkError:
C:\gurobi460\win64\win64\bin\GurobiJni46.dll: Can't load AMD 64-bit
.dll on a IA 32-bit platform
Then I downloaded the window 64 bit Jre, and use the "window-->preference-->Installed JRE" to install this new JRE.
However, it still appeared this error.
If you are still getting that error after installing the 64 bit JRE, it means that the JVM running Gurobi package is still using the 32 bit JRE.
Check that you have updated the PATH and JAVA_HOME globally and in the command shell that you are using. (Maybe you just need to exit and restart it.)
Check that your command shell runs the right version of Java by running "java -version" and checking that it says it is a 64bit JRE.
If you are launching the example via a wrapper script / batch file, make sure that the script is using the right JRE. Modify as required ...
If you are launching the example via an IDE, check that the IDE is using the right JRE to launch. Check and modify the IDE configs. The details will depend on the IDE you are using. Check the documentation. (Just setting external environment variables such as JAVA_HOME may not be sufficient in this case.)
Try this:
Download and install a 32-bit JDK.
Go to eclipse click on your project (Run As → Run Configurations...) under Java Application branch.
Go to the JRE tab and select Alternate JRE. Click on Installed JRE button, add your 32-bit JRE and select.
Uninstall(delete) this: jre, jdk, eclipse.
Download 32 bit(x86) version of this programs:jre, jdk, eclipse.
And install it.
I'm using eclipse on what I thought were all 64 bit runtime environments. The current settings Java>installed JREs and Execution Environment all point to jdk1.6.0_30 which is a 64 bit version of the JDK. However, eclipse still thinks it's running a 32 bit version because when I run:
System.getProperty("sun.arch.data.model");
it returns 32 instead of 64.
And the external JNI resource that I compiled for 64 bit machines will not link to the shared .so file unless it's running in a 64 bit enviroment. (I'm getting word size mismatch errors when I try to do this)
So How can I reconfigure eclipse to run 64 bit jvm. Does eclipse itself have to be a 64 bit version?
:on linux
Edit: I have tried everyone's suggestions and nothing is working. I've changed the execution, and enviroment variables to point to the newst JDK I have which is 1.6_30. when I run the program from a command line I get 64 and amd64 as the value when I run the same program in eclise I get 32 and i386. Something is wrong in eclipse that is causing it to try and run it on a 32 bit JVM. when I try java -d32 -version it says that a 32 bit enviroment isn't installed but Eclipse doesn't know that. I've modified the Eclipse.ini file and still nothing is working. I've restarted eclipse after these changes...nothing. Can some one who knows eclipse well people help me out here. thanks
Add the -vm tag to eclipse.ini or the shortcut to explicitly specify a JRE. Note that the default for Windows XP is to use the CRAPPY JRE that comes with Windows.
-vm "%JAVA_HOME%/bin/javaw.exe"
In eclipse.ini add:
-Xmx8g
-d64
For me its working properly! . Make sure your path is c:\Program File not c:\Program File(X86) ( if you installed 64 bit JDK it should store in c:\ Program Files)
Eclipse configuration is explained here
The "installed JREs" (better use JDKs) are used for building and running your code and can be of different architecture or Java version. The JVM used for running Eclipse is defined in the eclipse.ini file. You should use the version for the architecture of the JVM.
Okay. This has been rather headache inducing, but I believe I have a solution. After changing the eclipse.ini, Go to your project properties. Under the Run/Debug settings, edit the launch configuration for your project. Under the JRE tag, click installed JREs. When that dialog comes up, click search. Go to your program files folder, NOT the x86 one, and let it search for your JREs. When the latest comes up, deselect the JRE that was currently selected and select the most recent JRE that it found. I renamed mine JRE7-64 just so I could identify a difference. This solved the issue on my end. Good luck
I think there is a bug in the Run Configuration page.
I had to add the 64-bit JRE in run configuration, select it, and DELETE the 32-bit entry (even though it was already deselected).
eclipse.ini didn't work for me.
This is Eclipse Luna.