Re: Ada vs Java performance testing...

["Marc A. Criley" <mcqada95@earthlink.net>]

Frank wrote:
> 
> Hi!
> 
> > [....] If my understanding is correct, you can import Java classes and
> Objects into Ada code using it, including Java3D.
> >
> 
> Has anyone done this?

Oh yes.  I've built a whole GUI based on the Swing components, both
using and extending them, utilizing both classes and interfaces.

(JGNAT comes with a pre-canned set of bindings for JDK 1.2 and a tool to
auto-generate an Ada binding from any Java class.)

The problem with JGNAT 1.1p, the publically available version, is that
it's got some quirks and weaknesses that have to be coded around.  It
can be productively used, you just need to know upfront that there will
be some problems.  Also, if you're using tasking, it won't work with JDK
1.3, although non-tasking programs are okay.

I've heard that supported versions of JGNAT are much better and are
production ready.  Unfortunately you have to be a supported ACT customer
to have access to them.

> Another thing; is it possible to create distributed programs with JGNAT? If
> so is it possible to have one partition in JVM and another in regular
> executable?

It is not possible to build a distributed program with JGNAT 1.1p, don't
know what the currently supported version's capabilities in that area
are.

Marc A. Criley
Senior Staff Engineer
Quadrus Corporation
www.quadruscorp.com