Re: Calling Java from other programs

=?ISO-8859-1?Q?Arne_Vajh=F8j?= <>
Mon, 03 Mar 2008 21:19:08 -0500
<47ccb194$0$90271$> wrote:

On Mar 3, 5:00 pm, Arne VajhHj <> wrote:

fsumathguy wrote:

I am developing a model to be used by others within my company.
Because the end users are sort of a mixed bag with respect to
technical backgrounds, we generally present everything in MS Excel.
While Excel comes with VBA, I find this language cumbersome and
annoying to develop anything larger than a few lines. My program of
choice is Java. My question is, how can I do my development in Java,
then compile the results into an executable that I could subsequently
call from VBA? My boss (who is somewhat old school with repect to
programming) does a similar thing using Fortran 90. He is able to
generate a DLL file which allows him to pass all of the needed
parameters to his Fortran routine from VBA. Can I do something
similar with Java?

In theory you can:

VBA---(Win32 DLL call)--->simple wrapper in C---(JNI call)--->Java

In most cases I think it would be too cumbersome.

Why not simply communicate with already running JVM.
VBA <-> Java.

Because that was not what was asked for.

It could be done by TCP/webservices/JNI/whatever.

Is it possible to connect to a running JVM via JNI ??


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