Forum: JRuby ruby vs jruby

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60b37a5afcdf576450c09bb27f20391d?d=identicon&s=25 K2B K. (k2bsolutions)
on 2015-02-26 10:36
Hi friends,

what is advantages in JRuby?

K2B Solutions
87b282afd9a1920ebc1025b0d84e5b92?d=identicon&s=25 Cristiano D. (cristiano_d)
on 2015-02-26 15:49
I think the right answer is that jruby alows us to have diversity and
flexibilty to use java libs and take the high performance of
multhreading and use some resources like java web servers like Tomcat
and the VirtualMachine etc.

There are a project called Ruboto that use jruby is main language to
develop apps for android OS.
60b37a5afcdf576450c09bb27f20391d?d=identicon&s=25 K2B K. (k2bsolutions)
on 2015-03-23 08:38
Hi Cristiano D,

Thanks for sharing the information.
what is the difference in ruby and jruby?
Karol Bucek (Guest)
on 2015-03-23 13:43
(Received via mailing list)
We can not answer this question without knowing what you're "really"
looking for.

In general, for Ruby-ists used to MRI the "main" difference is GIL-free
multi-threading (Ruby code can actually run in parallel utilizing your

It's similar to Rubinius (also GIL-free) and is probably something that
from time-to-time confuses Ruby developers if they have little
with concurrency.
This is usually not something you need to worry about (as popular gems
thread-safe), but you might hit it eventually e.g. with web applications
your own user code.

Unlike Rubinius however, JRuby does not support MRI style C-extension
luckily most popular ones have alternatives or versions using

The most notable difference you'll notice when trying JRuby out is that
it's slower to start, however with a few tricks (jruby --dev) it's not
bad once you're using it for a while.

... all that being said JRuby is just Ruby and you can use it just like

Good JLuck, K.

On Mon, Mar 23, 2015 at 8:38 AM, K2B K2BSolutions <>
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