Book Review – Drools JBoss Rules 5.X Developer’s Guide by Micahal Bali (Packt Publishing)

Packt Publishing – Drools JBoss Rules 5x Developer’s Guide by Michael Bali

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I had an opportunity to take a look at this book in a different way – I was a Java and Drools developer for years already and wanted to see what I was missing. When I found this book, like all other books, I just turned over the pages quickly to find out what was in it or is it even worth spending your time in. I was surprised to see the amount of real world coding examples this book contained – something most developers would be happy to just copy and run as a part of their quick learning. It had a nicely structured chapters, clean format, explanations as needed, charts and diagrams to make your learning easy.As I started cruising through the chapters, I saw many alternate styles that I could have used while writing the rules.

I must tell you The content in this book is huge – it has over 300 pages – but the reading flows very well. You could be reading 3,4,5 chapters in one seating and feel that pride of having learnt something. Apparently the author has done a great job in presenting the book in a style that would definitely lower the learning curve. I bet the new developers or the developers who have had used this Drools with JBoss in the past would equally find this book worth looking at.

There are 12 chapters in this book. Most developers would be able to learn in a short amount of time what Drools is, how to write the basic rules, how business rules are validated, ho you can do a transformation of complex data using Drools. There is even a chapter that focuses on making the rules Human Readable. I was surprised with this chapter, because most of the coding book don’t normally talk about coding in a way business people can understand if they had opportunity to look at.

Definitely a thumbs up from me !

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5 Responses to Read XML File In JAVA using DOM – A Simple Tutorial

  1. harry says:

    I need a tutorial on an exact opposite of this excellent article. That is I need to serialize Java Object to XML. Can you help me in that Kushal??? I wud appreciate it a lot.

    Thanks

  2. Jim says:

    Hey Kushal!
    This is very great and helpful, but I got another question about that. If I have an Element which hasn’t any values, I always get a NullpointerException. Do you have an Idea how to fix/catch that?

    Thank you!

  3. Mridula says:

    The advantage in Java is that there it is not necessary to take care of objects which are no longer used. Garbage collector takes care of these objects unlike C/C++ language where because of this issue the program terminates causing OutOfMemoryErrors.

  4. priya says:

    Garbage collection is one of the most important feature of Java. Garbage collection is also called automatic memory management as JVM automatically removes the unused variables/objects (value is null) from the memory.

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