2. http://www.flickr.com/photos/elana/3145561746/

3. @june29 @sora_h
@nari3 @jugyo
@xibbar @arton
@conceal_rs @nahi

6. http://www.tbray.org/ongoing/When/200x/2007/06/19/Tokyo-Drinking

7. http://www.tbray.org/talks/RW09.pdf

8. http://www.tbray.org/talks/RW09.pdf

9. http://www.flickr.com/photos/koichiroo/6203078982

11. Started in 2002
Rails 1.8.6 100% compatible 1.8.7 100% compatible 1.9.2 compatible
--1.9 Java Embedded Windows
FFI GAE/J profiler
YAML(Yecht) C Ext
Maven

12. require ‘java’

13. require ‘ant-1.8.2.jar’
=> true
java_import org.apache.tools.ant.Target
=> Java::OrgApacheToolsAnt::Target
p Target
=> Java::OrgApacheToolsAnt::Target
t = Target.new
=> #<Java::OrgApacheToolsAnt::Target:
0x3fb35ece>

14. h = java.util.HashMap.new
h.isEmpty
h.is_empty
h.is_empty?
h.getForNullKey
h.for_null_key

15. h.put ‘ujihisa’,
‘married! congrats!’
rh = a.to_hash
=> {"ujihisa"=>"married!
congrats!"}
rh.to_java

16. java.lang.Thread.new do
puts “Thread”
end.start

17. % jirb
irb(main)> JRUBY_VERSION
=> “1.6.5”

18. Scripting Java

19. 1.6.5(2010.10.25)
1.7.0-dev

21. both 1.9 and 1.8 are supported

24. gem install redcar
redcar install

29. Development of JRuby

30. bugs.jruby.org
user
ci.jruby.org
test
contributor
jruby-dev
git.jruby.org github.com/jruby
developer #jruby JRuby Ecosystem

31. @tom_enebo @headius
@nicksieger @hiro_asari
@nahi subbuss
@yokolet @vsizikov

33. JRuby is developed by Java.

35. - Thomas E.Enebo -
http://www.atmarkit.co.jp/news/200705/10/jruby.html

36. http://www.flickr.com/photos/revcyborg/5228173/

38. http://github.com/jruby/jruby
Fork

39. % git clone git@github../jruby.git
% git checkout -b foo_branch
...
% git add foo
% git commit -m “foo bar”
% git push origin foo_branch

40. http://jira.codehaus.org/browse/JRUBY-5969

41. Pull Request!!!
Pull request

43. http://www.flickr.com/photos/koichiroo/6203136064

44. Iʼm a contributor

45. http://www.flickr.com/photos/npobre/2601582256/

49. http://www.flickr.com/photos/busy-pochi/5170100206/

50. RubyKaigi2007

54. - 35
http://jp.rubyist.net/magazine/?0035-ForeWord

57. https://twitter.com/#!/shugomaeda/status/134023660305514496

59. - 35
http://jp.rubyist.net/magazine/?0035-ForeWord

60. http://www.flickr.com/photos/revcyborg/5228173/

61. be connected to the world