Comments on: Rapid Prototyping with JRuby

By: Matt

Matt — Tue, 21 Sep 2010 18:18:37 +0000

So, perhaps you can help, but one thing that none of the examples im finding shows is how to run an application written in java from JRuby. Actually trying to run MagicDraw (www.magicdraw.com) from JIRB so that I can use the MagicDraw OpenAPI directly to manipulate models and have a chance to try out the MagicDraw OpenAPI on a specific project model before putting the code into eclipse to compile a java plugin…. Any thoughts? Im able to get all the jars included and can then do the import_class for the Main class which is used for launching the program. But after this it crashes with complaints and im afraid its just a shortcoming of me not know what i need to be doing from the jruby side of things….

By: Tomasz

Tomasz — Wed, 02 Jan 2008 15:36:57 +0000

Thanks for posting. Examples like this are nice when learning jruby. Jruby looks very nice for prototyping, and programming in science projects.

I had to move the instance variable @paint into def initialize to get it working in jruby 1.0.3 (java 1.6.0_03 ubuntu)

def initialize
@paint2 = GradientPaint.new(0, 0, Color::BLACK, 0, 200, Color::WHITE)
end

By: Ron Sweeney

Ron Sweeney — Sun, 18 Nov 2007 02:47:47 +0000

Thanks for posting… good stuff. Jruby is at the top of my learning list…

By: Vangelis

Vangelis — Sat, 15 Sep 2007 05:22:17 +0000

Interesting…

By: Daniel Spiewak

Daniel Spiewak — Thu, 01 Mar 2007 16:45:24 +0000

@Tom

Yeah, I think this was the demo I cheated on and didn’t bother testing the JRuby code. It is also possible that I did test it, but against the SVN version. I try to keep my demos 0.9.2 compatible, but… *shrug*

By: Tom

Tom — Thu, 01 Mar 2007 11:34:29 +0000

Very useful.. it is so hard to find JRuby examples at the moment, crazy as this project has so much potential.

Worth noting that this demo requires the SVN version of JRuby .. or at least something much newer than 0.9.2.

Thanks, T.

By: Vasudev Ram

Vasudev Ram — Sun, 18 Feb 2007 14:53:01 +0000

Interesting post – thanks!

Vasudev Ram
http://www.dancingbison.com