Getting Started with JRuby

JRuby is one of the easiest Ruby implementations to set up. Let’s start with the basic instructions:

1. Download JRuby: Visit the download page and grab the binaries for the latest JRuby release.
2. Unpack JRuby: Unpack the file you downloaded. You’ll then have a "jruby-<version>" directory.
3. Run JRuby: The JRuby startup script lives in the "bin" directory. Run "bin/jruby -v" to confirm it.

That’s about it!