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: 
Short answer to first question: yes.

Longer answer: maybe; it depends on whether the build process for SVMLight behaves itself on 64-bit windows.

Final note: that call to System.loadLibrary is silly. Either call System.load with a full pathname or let it search java.library.path.
Go to

Project properties >> Run >> VM options

and put this address:

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

```