Java 3D

[sven goethel]

Dear Java-Linux-Team,

whats about the Java3D status ?

Are there allready people on the run - to implement it ?

Are theire the sources from sun avaiable ?

Can i participate ?

Can i use my free (gpl) GL4Java implementation ?

Best Regards, Sven Goethel
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Java 3D

[Steve Byrne]

sven goethel writes:
 > Dear Java-Linux-Team,
 > 
 > whats about the Java3D status ?
 > 
 > Are there allready people on the run - to implement it ?

It's gated by Blackdown team member's time (mostly mine).

 > Are theire the sources from sun avaiable ?

Not under SCSL.

 > Can i participate ?

If it's just to get the 3D sources, I think Sun would frown on that.
If you're willing to do things like process bug reports, deal with user
email, run test builds of the system, debug thread problems including
looking at libpthreads sources for bugs, write documentation, i.e. if
you are SERIOUS, send me private email.

 > Can i use my free (gpl) GL4Java implementation ?

Don't know -- we build with MesaGL, although I don't think that's a 
*requirement* -- ideally, you could plug in any GL .so and use that
for low level rendering.

Steve



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Re: JDK1.2 and CORBA

[Osvaldo Pinali Doederlein]

> Michel Ruff suggested I run the Visigenic OSAgent through Wine; that
> sounds interesting, but I think I don't like having to depend on such a
> hack because a vendor didn't want to provide something that is not Win*
> specific. That said, Bryce McKinlay says that I don't need to run

Visigenic (aka Inprise) has versions of their products for several *nix
including the daemons, so I suppose the port to Linux would depend only on
Visigenic deciding that to be a good idea.

> OSAgent if I stick to standard CORBA. I might try that (my first
> attempts were unsuccessful, probably because I didn't find out how to
> tell the Visigenic ORB how to find the NameService). I think I would

In my experience, if I run Visibroker programs w/o osagent, they take some
time to initialize because the runtime tries to find the osagent and gives
up after some timeout, then all is okay (I didn't test the naming service in
such situation).  BUT you can avoid this initialization problem by using the
switch "-ORBdisableLocator true" (this will also make impossible to use
Gatekeeper).

> The one thing I didn't like about JacORB is its reliance on the BOA
> rather than the POA. I guess OrbaCUS doesn't have that problem? On the
> other hand, after I read the manual and did a couple of experiments, I
> got it to connect to the omniORB2 NameService without a hitch.

Well, most ORBs are still catching up with the POA and other things.
Visibroker 4.0 is supporting this for quite some time, but it's still in
internal beta and I don't know what's holding its release, but probably they
want to integrate every other product like ITS and Borland.com's compilers
and make a big splash.

A+
Osvaldo


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Crazy-huge JDK 1.2 memory usage reported by top/ps

[Bryce McKinlay]

Hi, I have a weird problem with JDK 1.2 - 'ps' and 'top' report massive
amounts of memory being used by the jdk whenever I run *anything* in java:
[bryce@p2-bryce bryce]$ ps aux | grep java
USER   PID %CPU
%MEM  SIZE   RSS TTY STAT START   TIME COMMAND
bryce    31839  6.9 11.6 75424 
7380  p0 S    22:12   0:01 /usr/local/java/bin/i
bryce    31863  0.0 11.6 75424 
7380  p0 S    22:12   0:00 /usr/local/java/bin/i
bryce    31864  0.0 11.6 75424 
7380  p0 S    22:12   0:00 /usr/local/java/bin/i
bryce    31865  0.0 11.6 75424 
7380  p0 S    22:12   0:00 /usr/local/java/bin/i
bryce    31866  0.1 11.6 75424 
7380  p0 S    22:12   0:00 /usr/local/java/bin/i
I'm pretty sure that java isn't *really* using 75MB of memory - total
mem usage, as reported by top, only increases by 5MB or so.
What could be causing this??
System info:
[bryce@p2-bryce bryce]$ rpm -q glibc procps
glibc-2.0.7-29
procps-1.2.9-2
[bryce@p2-bryce bryce]$ uname -a
Linux p2-bryce 2.2.4 #1 Wed Mar 24 14:14:26 NZST
1999 i686 unknown
regards
 
   [ bryce ]
 

[Q] ioctl+java

[Sorin Lingureanu]

 It is possible to simulate ioctl functions in Java ?

--
Sorin Lingureanu


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Re: JDK1.2

[Michael Sinz]

On Fri, 26 Mar 1999 23:16:47 +0100, DESROC Christian wrote:

>I'm using Red Hat 5.2  with kernel 2.0.36-1
>
>Where can i find the kernel 2.0.37 (what is the problem if i use jdk1.2
>with kernel 2.0.36).

Well, the versions before 2.0.37pre9 have some multicast socket problems.
This generally will not affect most people as far as Java is concerned
unless you are trying to pass the JCK tests, some of which test the
multicast socket support in Java (and thus found some bugs in Linux)


Michael Sinz -- Director of Research & Development, NextBus Inc.
mailto:[EMAIL PROTECTED] - http://www.nextbus.com
My place on the web ---> http://www.users.fast.net/~michael_sinz



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Re: Crazy-huge JDK 1.2 memory usage reported by top/ps

[Michael Sinz]

>From: Bryce McKinlay
>
>Hi, I have a weird problem with JDK 1.2 - 'ps' and 'top' report massive amounts of 
>memory being used by the jdk whenever I run *anything* in java: 
>
>[bryce@p2-bryce bryce]$ ps aux | grep java 
>USER   PID %CPU %MEM  SIZE   RSS TTY STAT START   TIME COMMAND 
>bryce31839  6.9 11.6 75424  7380  p0 S22:12   0:01 /usr/local/java/bin/i 
>bryce31863  0.0 11.6 75424  7380  p0 S22:12   0:00 /usr/local/java/bin/i 
>bryce31864  0.0 11.6 75424  7380  p0 S22:12   0:00 /usr/local/java/bin/i 
>bryce31865  0.0 11.6 75424  7380  p0 S22:12   0:00 /usr/local/java/bin/i 
>bryce31866  0.1 11.6 75424  7380  p0 S22:12   0:00 /usr/local/java/bin/i 
>
>I'm pretty sure that java isn't *really* using 75MB of memory - total mem usage, as 
>reported by top, only increases by 5MB or so. 
>
>What could be causing this?? 

Top reports the "virtual address space used" by the process.  This includes
shared memory, mapped but uncommitted memory, and mapped files (such as
things that are mmap()'ed)  The actual workingset at the current time is
also somewhat hard to count but the RSS is the physical memory currently
used but it also includes the shared libraries (for ELF binaries, which
is what the JDK is)

See the man page for TOP.

As you can see here, the number is 7380K, much of which is shared, but some
of which (depending on the java code that is running) is the byte code that
is running (and any JIT'ed native code if you happen to have a JIT too)

Michael Sinz -- Director of Research & Development, NextBus Inc.
mailto:[EMAIL PROTECTED] - http://www.nextbus.com
My place on the web ---> http://www.users.fast.net/~michael_sinz



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Re: Crazy-huge JDK 1.2 memory usage reported by top/ps

[Michael Sinz]

On Sat, 27 Mar 1999 08:42:15 -0500, Michael Sinz wrote:

>>From: Bryce McKinlay
>>
>>Hi, I have a weird problem with JDK 1.2 - 'ps' and 'top' report massive amounts of 
>memory being used by the jdk whenever I run *anything* in java: 
>>
>>[bryce@p2-bryce bryce]$ ps aux | grep java 

>Top reports the "virtual address space used" by the process.  This includes

Oops... I ment to say PS (since this is what you ran) but both provide
you with the same type of information (and with the same labels...)

Michael Sinz -- Director of Research & Development, NextBus Inc.
mailto:[EMAIL PROTECTED] - http://www.nextbus.com
My place on the web ---> http://www.users.fast.net/~michael_sinz



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Scrolling frame in Applet.

[Ferenczi Gyorgy Laszlo]

Hy,

I would like to do the following:

List a couple of things from a postgres database, don't know how many
lines. 
Problem is:
Wanna List them on a canvas of an applet, in a text-like window, that has
sliders (can scroll in it). 

I have only got java 1.1.6 , without swing. 

Pls help. 

Thanks, 

George 



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Re: Scrolling frame in Applet.

[Michael Sinz]

On Sat, 27 Mar 1999 15:53:51 + (   ), Ferenczi Gyorgy Laszlo wrote:

>
>Hy,
>
>I would like to do the following:
>
>List a couple of things from a postgres database, don't know how many
>lines. 
>Problem is:
>Wanna List them on a canvas of an applet, in a text-like window, that has
>sliders (can scroll in it). 
>
>I have only got java 1.1.6 , without swing. 

This should not be hard.  You can either implement this as a light
component yourself or you can use the java.awt.TextArea class.

It can be in read-only mode, has both horizontal and vertical scrollers
and it is handled by peers.  This even works in JDK 1.0.2 and in applets.

Michael Sinz -- Director of Research & Development, NextBus Inc.
mailto:[EMAIL PROTECTED] - http://www.nextbus.com
My place on the web ---> http://www.users.fast.net/~michael_sinz



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more AWT crashes

[Dimitris Vyzovitis]

Anil kumar wrote:

> this is due to x server configuration problems. though it may be working
> fine with normal x apps you need to do some 'fine tuning' in it.
>
> Anil
>

I also experienced some X-server crashes caused by a particular AWT app that
used to run some months ago (it still runs on NT). It crashes no matter if I
use 1.1.7-v1a or 1.2-pre1
The onlly thing that changed since then is that I now  use XFree-3.3.3.1
instaed of 3.3.2 and kde1.1 instead of kde1.0.
Has anybody experienced similar behavior?
Either way, if anyone would like to verify the problem (or take a look at it),
please contact me for the source tarball

Dimitris


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appletviewer fails.

[Mark Swanson]

Hello,

I've searched all the past messages on appletviewer and have found
people with other problems with appletviewer but no mention of my
problem. So here goes:

I don't get any text when I use the appletviewer! When I start it for
the first time the usual license window opens up but no text is
displayed. No text is displayed for any subsequent appletviewer window.

When I start up other Java applications everything works fine - though
it complains about dingbats missing and I haven't seen a solution posted
here or in the README.

I'm using XFree86-3.3.3.1, Linux 2.2.3, redhat-5.1 with lots of the
latest glibc and system upgrades.

BTW, I'm using the really crappy twm window manager. Should I use
another window manager? Recommendations?

Thanks.

--
---
If DOS means "Denial Of Service" what's MS-DOS?
 And why should I tell it to "win"?



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Re: [Q] ioctl+java

[Xuan Baldauf]

Sorin Lingureanu wrote:

>  It is possible to simulate ioctl functions in Java ?

No, and this is a great bug in the language because one thread per read or write
process is inscaleable. This problem makes my project fairly inusable. :-(

Please vote for Bug ID 4075058 at http://developer.javasoft.com/ for a quick
solution to this problem.

Thanx,

Xuân.




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grrrrrr.....

[Matthew McKeon]

I've hunted through the list archives and seen several questions 
re: What happened to the activator link on blackdown?

Have there been ANY new developments on this?
Where the heck are the blackdown people?
I'm trying to cheerlead our office into switching to linux
as a java development platform,  
but since our environment is Java 1.2 
and our target client is a winNT box running Netscape + the Plugin, 
it's IMPOSSIBLE for us to switch without the activator. 

Where the heck is the activator?!?
Does anyone know of any mirrors where I might obtain it?


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Re: KDE PLAF

[Jeff Galyan]

[EMAIL PROTECTED] wrote:
> 
> On Wed, 24 Mar 1999 09:56:59 +0100
> Peter Kovacs <[EMAIL PROTECTED]> wrote
> 
> > What is PLAF?
> 
> PLAF stands for Pluggable Look-and-Feel. It is a feature of Swing
> that allows the look and feel of Java GUI interface to be set
> independent of the other GUI code and on the fly if set up correctly.
> The native Swing PLAF is Metal, but one can also set it to Windows or
> Motif. I have heard this is even a Mac PLAF available somewhere.
> 

The Mac look & feel is only available in the Mac download of Swing, and
will only run on MacOS (just as the Windows look & feel only runs on a
Win32 machine), as the legal issues involved in making those look & feel
sets available on other platforms are unclear.


-- 
Jeff Galyan
http://www.anamorphic.com
http://www.sun.com
jeffrey dot galyan at sun dot com
talisman at anamorphic dot com
Sun Certified Java(TM) Programmer
==
Linus Torvalds on Microsoft and software development:
"... if it's a hobby for me and a job for you, why are you doing such a
shoddy job of it?"

The views expressed herein do not necessarily reflect those of my
employer.

Sun Microsystems, Inc., has no connection to my involvement with the
Mozilla Organization.


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