This week's book giveaways are in the iOS and Features new in Java 8 forums. We're giving away four copies each of Barcodes with iOS: Bringing together the digital and physical worlds and Core Java for the Impatient and have the authors on-line! See this thread and this one for details.
Please read before you get to the code. So that you understand the basics before you try to come up with an example or code.
As the example you have given we would not need map reduce directly,
you can make an example out of it however for your understanding, however it will be much more complex compared to wordcount example
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