• Subject: RE: does anyone post to this list?
  • From: "Christopher J. Jewell" <jewellcj@xxxxxxxxxxxxxxxxx>
  • Date: Wed, 30 Sep 1998 21:36:43 -0700
  • Importance: Normal

I've played around with Remote AWT serving an NT Workstation. It's wonderful
to behold the AS/400 delivering up GUI from a native language without any
intemediate 'client/server/microsoft' stuff! It's a little slow at present
and IBM does not recommend for heavy-duty GUI applications at present. Also,
you would need to be aware that Remote AWT uses RMI, and so you must be
running a JVM on the client which supports RMI. IE 4.0's JVM  does not
support RMI. Theoretically, though, you could use Javasoft's 'Java Plug-In'
to automatically make your applet run Javasoft's JVM and then spawn a thread
to initiate the Remote connection. Once initiated, of course the AS/400
takes over serving up the GUI to the workstation. I should stress that I'm a
novice in this area, so your best bet would be to check the red book at

On the question of how good Java is on the AS/400, I had a chat recently
with the lecturer at a Java evening course I'm attending. He works as a
software engineer at a very well known Java software company with here in
San Francisico. When faced with the task of implementing their software on
the AS/400, any skepticism vanished when all of their thousands of Java
classes compiled successfully and ran perfectly on the AS/400. In contrast,
his regression testing with a new version of Microsoft's Java compiler
(JVC), revealed that Microsoft had introduced a couple of extra keywords to
its compiler causing the compiler to blow up because almost every java
source had a variable the same name as one of these keywords! So they had to
change their source code for the new release of JVM.

Hope this helps.

Chris Jewell


> -----Original Message-----
> From: owner-java400-l@midrange.com
> [mailto:owner-java400-l@midrange.com]On Behalf Of Glenn Holmer
> Sent: Wednesday, September 30, 1998 4:37 AM
> To: JAVA400-L@midrange.com
> Subject: Re: does anyone post to this list?
> On Wed, 30 Sep 1998 08:04:11 -0700, Rich Buttenhoff wrote:
> >It's working - we're not apparently.  :)
> Or either Java on the '400 is so usable that no one has any
> problems to report :)
> Seriously, we've only started using it, but find the performance
> of PC programs accessing '400 databases through the AS/400 Java
> Toolkit to be nothing short of amazing.  If I came up against a
> thorny problem, I would post here, but I haven't!
> One thing we haven't tried is the Remote AWT (Java program runs
> on the '400 but displays its GUI output on a PC).  Has anyone
> worked with this?  Are there any gotchas?

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