Using Java API gives "no nativemvm in java.library.path"

I am attempting to work through the example code for the Java Matlab engine API (Note: this is calling Matlab FROM Java): https://www.mathworks.com/help/matlab/matlab_external/java-example-source-code.html

I can get to the last step, then I get the error: "java.lang.UnsatisfiedLinkError: no nativemvm in java.library.path". FYI I get this same error when trying to run my own code linked to Matlab in Eclipse.

Does anyone know how to fix this? Or know of any other information/examples/tutorials on calling the Matlab engine from Java? (This is a very new feature in 2016b so there is not much information out there)

[Michaela Rikard]

I am having the same problem. I have added the matlabroot/bin/maci64 to both the PATH and DYLD_LIBRARY_PATH and am getting the same error: no nativemvm in java.library.path. It seems like people have been able to get this to work by adding to the PATH in Windows. Has anyone had success on a Mac?

Answer 1

[Jim Person]

Answering my own question: I used the suggestion to add matlabroot\bin\win64 to the PATH permanently using the Windows UI, instead of temporarily in Eclipse/cmd, and the code compiles now (the example problems and my own).

[Adriano Ferreira]

Thank you awesome work. It helped allot

[Manuel Rios]

Can you show me , any of your codes ? @Jim Person

import com.mathworks.engine.*;
public class CNN
{
    public static void main(String[] args) throws Exception{
        MatlabEngine eng = MatlabEngine.startMatlab();
        double[] a = {2.0 ,4.0, 6.0};
        double[] roots = eng.feval("sqrt", a);
        eng.close();
    }
}

I was trying to compile that code which is an example from mathworks but Eclipse says that it has an error in feval function due to th arguments that Im using

[Manuel Rios]

I added matlabroot\bin\win64 to my Computer envirioment variables but now this error appers: Exception in thread "main" java.lang.UnsatisfiedLinkError: com.mathworks.mvm.MvmFactory.nativeSetJavaEngine(Z)V

Help Please

[Jose Cano]

I am blocked with the same error : "com/mathworks/mvm/MvmFactory.nativeSetJavaEngine(Z)V" Any help would be greatly appreciated.

[happy]

Came across this, having the same error: com/mathworks/mvm/MvmFactory.nativeSetJavaEngine(Z)V

May I know how you resolved it?

Thank you!

[SK]

I am also having this error--has any one been able to figure out a solution?

Thanks for the help!

Answer 2

[J.Eric Tkaczyk]

This also worked for me, but I had to first exit and restart my IntelliJ IDE after changing the PATH on the Windows Environment Variables

[Christoph Müller]

I still have this problem (also with IntelliJ IDE) despite changing the PATH on the WIndows Environment Variables. Could you please explain hoe you were to solve this issue step by step? It seems that I am missing something here. Thanks!

Answer 3

[ant]

you need to add the matlab library to your IDE(eclipse or others) or System (if you don't use any IDEs ), see below:

that's the right solution.

[Manuel Rios]

Where did you find this info ?

[sahar alhaddad]

Thank you. it works in STS.

Answer 4

[Chibing Gng]

matlabroot/extern/engines/java/jar/engine.jar

But in my computer I do not have the above files for 2016b.Please tell me how to fix it.

[Manuel Rios]

Download the file from here Im using 2016a

[Chibing Gng]

Thanks.

Answer 5

[Kobe Van Reusel]

I'm having the same problem but can't find the solution for it.

I added the path to my PATH variable and added the engine.jar to my library but stil it gives me the "no nativemvm in java.library.path" error.

Can someone explain all the steps he took to get it working? Is it important where the engine.jar file is located or can i put it in the working directory of my project?

I'm using osx with netbeans and downloaded Matlab R2017a.

[Bo Li]

This is a quote from the file "<matlabroot>/extern/examples/engines/java/README" for Mac:

Run the examples by adding "<matlabroot>/bin/maci64" to the Java library search path without setting the DYLD_LIBRARY_PATH variable:

java -Djava.library.path=<matlabroot>/bin/maci64 -classpath .:<matlabroot>/extern/engines/java/jar/engine.jar EngineConsoleDemo