How to get started with Ruby programming language with Java background?

I am intermediate in java but as one of the company requirements they are looking for JAVA+RUBY programming language.. Can anybody help how to get started with Ruby I need to get it done in next one month so that I can crack the interview of the com开发者_运维问答pany... I wanna know how does Ruby work like compiler, is it platform independent or how does byte code generated.. I must be able to write the small level programs in Ruby.. Like in java First I need to download JDK den getting started with programs.. How about Ruby what all I need to install in my computer..

Thanks..

To Ruby From Java
To Ruby From Other Languages
Download Ruby

The Pickaxe book

Why's guide

Kind of surprised no one has mentioned JRuby yet.

One of its strengths is the ability to natively call Java classes, so you can use a lot of the frameworks from Java that you're already familiar with.

Downloading the Ruby Koans is another great way to learn http://github.com/edgecase/ruby_koans

Pragrog books are always good:

http://pragprog.com/titles/fr_j2r/from-java-to-ruby

Start here:

http://tryruby.org/

Once you do the 15 minute walk-through, go here:

Programming Ruby: The Pragmatic Programmer's Guide

To Ruby from Java:

http://www.ruby-lang.org/en/documentation/ruby-from-other-languages/to-ruby-from-java/

That is the official site for Ruby and will be able to point you to language downloads and other resources.

How about the Ruby language web site: http://www.ruby-lang.org/en/

Also, I would advise you not to try and come across as a ruby expert in the interview after only playing with it for a month. It's better to err on the side of honesty, because a good interviewer will be able to tell when you are faking it... or worse, it will show when you start working.

Ruby is a cool language... have fun!