Realtime Java - Getting Started

busysteve

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Nov 11, 2006, 8:55:27 PM11/11/06

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I've written realtime software in C/C++ and I've written system
applications in Java. What I haven't been able to do is write realtime
software in Java (use of hardware interrupts and such). I've searched
for embedded development kits and APIs. I found javax.realtime but no
JVMs that support it. I've also found various kits that say they
support java but not to what degree. This is for fun so I don't want
to get crazy on cost. If you have done this can you point me in the
right direction?

Steve

John

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Nov 15, 2006, 2:40:33 AM11/15/06

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I really doubt if Java really can fit in embedded systems development.
What types of systems applications you wrote in Java? I thought Java is
for high-level application development.

Philippe Amarenco

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Nov 28, 2006, 5:49:55 PM11/28/06

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"John" <jav...@gmail.com> writes:

> busysteve wrote:
>> I've written realtime software in C/C++ and I've written system
>> applications in Java. What I haven't been able to do is write realtime
>> software in Java (use of hardware interrupts and such). I've searched
>> for embedded development kits and APIs. I found javax.realtime but no
>> JVMs that support it. I've also found various kits that say they
>> support java but not to what degree. This is for fun so I don't want
>> to get crazy on cost. If you have done this can you point me in the
>> right direction?
>
> I really doubt if Java really can fit in embedded systems development.
> What types of systems applications you wrote in Java? I thought Java is
> for high-level application development.

actually, the javax.realtime (www.rtsj.org) is an API quite close to
hardware and ressemble that of a realtime kernel. It gives great
control over memory allocation and object lifetime so it is much more
predictible.

by the way,

I have started a (free/open-source) project (initialy for school)
which aims to implement a JVM + CLDC + RTSJ.

http://sourceforge.net/projects/joker-vm

Anyone interrested in contributing is welcome to do so. (you'll have
to checkout/browse the svn rep', no tarball has been released yet).

--
Philippe Amarenco, aka Phix
epita 2007 - GISTR - ACU - EpX

a...@ipclearingboard.com

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Dec 14, 2006, 10:59:42 AM12/14/06

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Philippe Amarenco wrote:

>
> I have started a (free/open-source) project (initialy for school)
> which aims to implement a JVM + CLDC + RTSJ.
>
> http://sourceforge.net/projects/joker-vm

Hmm, the project was started 4 years ago.

massiccio

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Jan 8, 2007, 10:52:41 AM1/8/07

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http://jrate.sourceforge.net/

On Nov 28 2006, 10:49 pm, Philippe Amarenco <phili...@amarenco.net>
wrote:

> "John" <java...@gmail.com> writes:
> > busysteve wrote:
> >> I've written realtime software in C/C++ and I've written system

> >> applications inJava. What I haven't been able to do is write realtime
> >> software inJava(use of hardware interrupts and such). I've searched

> >> for embedded development kits and APIs. I found javax.realtime but no
> >> JVMs that support it. I've also found various kits that say they

> >> supportjavabut not to what degree. This is for fun so I don't want

> >> to get crazy on cost. If you have done this can you point me in the
> >> right direction?
>

> > I really doubt ifJavareally can fit in embedded systems development.

> > What types of systems applications you wrote inJava? I thoughtJavais

> > for high-level application development.actually, the javax.realtime (www.rtsj.org) is an API quite close to