If you just started to work with Ruby and if you are the Java Developer this is the most powerful solution for you - JRuby. That’s the magnificent synergy between power of Java( millions libraries, millions projects in whole world, millions Java programmers) and Ruby ( always giving productivity and fun). If you haven’t tried JRuby yet, there is a video you should see: JRuby: The power of Java and Ruby. Simple speaking it’s an 100% pure-Java implementation of the Ruby programming language. Of course we can using Ruby On Rails or Merb with it now Current version is 1.1.2 and it gives really good performance (opposite to the groovy which I was talking about last time). All your JRuby projects can be started later with for example GlassFish server.

There is another interesting tool called JtestR - that will make it easier to test Java code with state of the art Ruby tools (RSpec, Test/Unit, dust, mocha and Active Support).

So now the only way is to download it and start using