Re: dlgtest() no longer needs Octave package

[Daniel J Sebald]

On 11/27/2012 07:08 PM, Mike Miller wrote:
> On Tue, Nov 27, 2012 at 06:22:46PM -0600, Daniel J Sebald wrote:
> > On 11/27/2012 06:14 PM, Mike Miller wrote:
> > > On Tue, Nov 27, 2012 at 05:42:13PM -0600, Daniel J Sebald wrote:
> > > > On 11/27/2012 05:14 PM, Daniel J Sebald wrote:
> > > >
> > > > > Perhaps your definition of JAVA_HOME is wrong, but in my case I can set
> > > > > JAVA_HOME to any valid directory and "dlgtest(0)" functions properly.
> > > >
> > > > dlgtest(1) is supposed to reinstall Java Octave package.  I presume
> > > > that is obsolete now:
> > >
> > > I'm catching up on all these Java developments, but I think so, yes.
> > > That also means dlgtest has no need for JAVA_HOME.
> >
> > Why is that?  Please explain because I'm wondering what the roll of
> > JAVA_HOME is in configuration and once Octave is running.  How about
> > the compiled javaexac.c and javacomp.c that disable JAVA_HOME.
> > What's happening there?
>
> I don't see those files being used anywhere in the Octave build. They
> are part of gnulib, but not a part that is currently used by Octave.
>
> I do not have JAVA_HOME in my environment and Octave builds and runs
> fine on my setup. I have to set it for dlgtest(0), but as you noticed,
> it can be set to any directory, I set it to /tmp and the demos work just
> fine for me.

OK, thanks for clearing that up.

I did a bit of web search and JAVA_HOME is apparently some convention 
for servers to find where Java is located:

http://stackoverflow.com/questions/2025290/what-is-java-home-how-does-jvm-will-find-the-javac-path-stored-in-java-home

...

Regarding some of the functions in the java package and directing to the 
broader list, are the names "errordlg", "helpdlg", etc. language 
standards?  If not, I wonder if their names should include "java" in 
some way.  The reason I wonder is because if one launches Octave with 
the new GUI/IDE then it seems to me that "errordlg", etc. would be nicer 
as a Qt widget, not Java.  That way, it is the same look and feel and 
uses just one software exterior.

I just tried creating some Java dialog boxes under the Octave IDE and it 
crashes on my system.  Should we start entering bugs for Java in the 
tracker, or wait a while?

Dan