# JRuby 0.9.8 released

**URL:** <https://www.ruby-forum.com/t/jruby-0-9-8-released/87803>\
**Category:** Ruby\
**Created:** [March 6, 2007, 1:35am UTC](https://www.ruby-forum.com/t/jruby-0-9-8-released/87803 "2007-03-06T01:35:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Thomas\_E](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/8c91f0/32.png) [@Thomas\_E](https://www.ruby-forum.com/u/Thomas_E)\
**Post date:** [March 6, 2007, 1:35am UTC](https://www.ruby-forum.com/t/jruby-0-9-8-released/87803/1 "2007-03-06T01:35:22Z")

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The JRuby team is pleased to announce the release of JRuby 0.9.8.

Homepage: [http://www.jruby.org/](http://www.jruby.org/)  
Download: [http://dist.codehaus.org/jruby/](http://dist.codehaus.org/jruby/)

This release has some great improvements:

- Ruby on Rails support. We have been working hard on getting Rails own  
unit  
tests running and over 98%\* of them now run successfully. We feel things  
are  
running well enough to invite Ruby users to kick the tires and help root  
out  
any final issues.
- Ruby classes can extend concrete/abstract Java classes and override  
methods
- New Java primitive array syntax
- Reimplementation of String, Numeric classes, and Array to be more  
correct  
and performant
- Significant bottlenecks have been identified. In some cases IO is 6.5x  
faster than previous releases. Java included classes are significantly  
faster than in the past.
- 225 Jira issues resolved since last release

At the beginning of this development cycle we added Nick S. as a  
committer  
to JRuby. Nick has been a welcome addition to the team.

Special thanks to Marcin Mielżyński for his tireless work in rewriting a  
number of core classes to be much more correct and quick. His attention  
to  
detail has rooted out many corner cases.

The amount of IRC conversations, mailing list threads, bug reports,  
patches,  
and blog entries in the community has been a great help and our  
community is  
really making a huge difference in how fast JRuby is improving. The  
amount  
of progress is really staggering…

- [http://www.headius.com/jrubywiki/index.php/Rails\_Support](http://www.headius.com/jrubywiki/index.php/Rails_Support)

-Tom

---

<div class="post-metadata">

**Author:** ![Thomas\_E](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/8c91f0/32.png) [@Thomas\_E](https://www.ruby-forum.com/u/Thomas_E)\
**Post date:** [March 6, 2007, 3:43pm UTC](https://www.ruby-forum.com/t/jruby-0-9-8-released/87803/2 "2007-03-06T15:43:17Z")

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Thomas E. wrote:

> are  
> running well enough to invite Ruby users to kick the tires and help root  
> out  
> any final issues.

We are actively looking for folks with pure-Ruby R. apps (i.e. no  
critical extensions) to help test them out on JRuby 0.9.8. I’ve already  
heard from a couple folks whose apps started up and “just worked”. We  
know things aren’t going to be perfect with Rails support, but it’s  
pretty darn close.

Feel free to communicate with me or Tom directly about issues you find,  
or even better: join the mailing lists and report issues at [jruby.org](http://jruby.org).

- Charlie