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..

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To Ruby From Java
To Ruby From Other Languages
Download Ruby

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The Pickaxe book

Why's guide

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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.

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

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Pragrog books are always good:

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

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Start here:

http://tryruby.org/

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

Programming Ruby: The Pragmatic Programmer's Guide

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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.

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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!