Book recommendation for a Ruby dev learning Java

Posted by cpjolicoeur on Stack Overflow See other posts from Stack Overflow or by cpjolicoeur
Published on 2010-05-30T14:04:59Z Indexed on 2010/05/30 14:12 UTC
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I've been a Ruby developer for the past 4-5 years, and prior to that coded in Perl and a language called ProvideX for years.

As hard as it may seem, I've never written a Java application short of the basic Hello World app probably a decade ago.

I'm beginning to start doing some Android development to port some iPhone applications we did for a client over to the Android platform. As such, I'm wondering what the best reference book I can buy is to get up to speed quickly with the features (and peculiarities) of Java.

There are numerous "Learn Ruby for Java programmers" out there, but not really any reference books for going the otherway of Ruby-to-Java. I'm looking for something preferably like the "Learn Perl the Hard Way" book. I know how to code, I just need a reference on learning the proper mechanics of Java after having done Ruby (and a bit of Obj-C) work exclusively for the past few years.

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