“The two core JRuby developers, myself and Thomas Enebo, will become employees at Sun Microsystems this month. Our charge? You guessed it…we’re being hired to work on JRuby full-time.”
And remember that they got a simple rails application running under jruby last May.
Tim Bray has some more on it
Well. Well.

3 Comments
I went to the JRuby site and couldn’t find any place where they said why JRuby is good and why I should use it. What does JRuby allow you to do? that plain old Ruby doesn’t? Examples help a lot.
There’s two consistent and correct complaints about Ruby: that the VM isn’t meant for well performing long running processes and that it hasn’t developed as wide of a library set as Java.
JRuby then is Ruby taking advantage all of the resources that have been poured into Java over the last ~10 years and could be a good way to push Ruby (from a developer’s perspective) into more places.
I’m sure in their mind the ideal combination would be the syntax and development philosophy of Ruby combined with the relatively matured VM and libraries of Java.
However, we’ll see.
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