# JRuby 0.9.0 Released

**URL:** <https://www.ruby-forum.com/t/jruby-0-9-0-released/97192>\
**Category:** Ruby\
**Created:** [July 5, 2006, 3:41pm UTC](https://www.ruby-forum.com/t/jruby-0-9-0-released/97192 "2006-07-05T15:41:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Thomas\_E\_Enebo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/82dd89/32.png) [@Thomas\_E\_Enebo](https://www.ruby-forum.com/u/Thomas_E_Enebo)\
**Post date:** [July 5, 2006, 3:41pm UTC](https://www.ruby-forum.com/t/jruby-0-9-0-released/97192/1 "2006-07-05T15:41:34Z")

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> **[Home — JRuby.org](https://www.jruby.org/)**
>
> JRuby is a high performance, stable, fully threaded Java implementation of the Ruby programming language.

We are pleased to announce JRuby 0.9.0. This release has had so much  
activity and progress that we decided to bump things up to a 0.9.0  
release.  
Many many bugs have been fixed to the point that:

- RubyGems 0.9.0 installed and working\*

- WEBrick runs

- Ruby on Rails runs on top of WEBrick (and generation scripts work)\*\*

- much improved YAML parser thanks to JvYAML and RbYAML projects

- we bundle all non-native standard libraries in our distribution

- Ola B. for his rubygems and YAML work. He has spent a lot of sweat  
and  
tears to get rubygems functioning. His YAML work is a very exciting.  
Development of JvYAML extends beyond JRuby in scope into the Java world  
at large. He also spent a lot of time looking at bottlenecks and  
addressing  
performance of Rubygems once it was working.

- Evan Buswell for his server socket work. He improved on David  
Corbin’s  
original socket work and got the socket code working well enough to  
WEBrick  
to start.

footnotes:

- Though the YAML and download of the remote gem is somewhat comparable  
to  
Ruby performance we have a severe performance problem when generating  
rdocs  
for the new gem. We plan on looking at this at the beginning of the  
next  
development cycle. Consider using options: --no-rdoc and --no-ri  
\*\* We are able to generate and run the cookbook demo from rolling with  
rails tutorial  
([http://www.onlamp.com/pub/a/onlamp/2005/01/20/rails.html](http://www.onlamp.com/pub/a/onlamp/2005/01/20/rails.html))  
with what we have and all appears to work. With this said, it is likely  
that there are several aspects of rails that are not working correctly.  
See docs/README.rails for known issues/instructions in release.

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**Author:** ![Thomas\_E\_Enebo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/82dd89/32.png) [@Thomas\_E\_Enebo](https://www.ruby-forum.com/u/Thomas_E_Enebo)\
**Post date:** [July 5, 2006, 3:48pm UTC](https://www.ruby-forum.com/t/jruby-0-9-0-released/97192/2 "2006-07-05T15:48:02Z")

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On 7/5/06, Thomas E Enebo [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> We are pleased to announce JRuby 0.9.0…

Congratulations! Are there any differences between the RC1 and this  
one (i.e. do I need to re-download the final 0.9.0)?

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**Author:** ![Thomas\_E\_Enebo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/82dd89/32.png) [@Thomas\_E\_Enebo](https://www.ruby-forum.com/u/Thomas_E_Enebo)\
**Post date:** [July 5, 2006, 4:00pm UTC](https://www.ruby-forum.com/t/jruby-0-9-0-released/97192/3 "2006-07-05T16:00:59Z")

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On Wed, 05 Jul 2006, Lyle J. defenestrated me:

> On 7/5/06, Thomas E Enebo [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:
> 
> > We are pleased to announce JRuby 0.9.0…
> 
> Congratulations! Are there any differences between the RC1 and this  
> one (i.e. do I need to re-download the final 0.9.0)?

Nope it did not change.

-Tom