Question: I am trying to use [SVMLight](http://svmlight.joachims.org/) from Java, using the [JNI wrapper on this page](http://www.mpi-inf.mpg.de/~mtb/):

```
  static {
    System.loadLibrary("lib/JNI_SVM-light-6.01/lib/svmlight");
  }

```

I get the following error:

> 
> ... lib\JNI\_SVM-light-6.01\lib\svmlight.dll: Can't load IA 32-bit .dll
>  on a AMD 64-bit platform
> 
> 
> 

Can I solve this by recompiling the .dll for 64 bit? **How would I go about doing this?** Is there some other workaround I can use? SVMLight makes the C source code available.

Answer: 
Go to

Project properties >> Run >> VM options

and put this address:

```
-Djava.library.path="C:\opencv\build\java\x64"

```
no build for Win64 necessary.

Download 64x version on <https://tomcat.apache.org/download-native.cgi>

from one of the mirrors i.e.

<https://mirror.checkdomain.de/apache/tomcat/tomcat-connectors/native/1.2.28/binaries/tomcat-native-1.2.28-openssl-1.1.1k-win32-bin.zip>

from zip use:

> 
> bin\x64\tcnative-1.dll
> 
> 
>