Rating: 
Summary: the best J2ME resource available
Review: After reading the first edition of Knudsen's book, I was able to successfully write a J2ME application that is now being distributed by major cellular service providers. I had no prior experience with J2ME and gained all of my knowledge from that book.I picked up the second edition as soon as it came out and was extremely pleased with the new information presented. It is a "must have" for anyone interested in learning J2ME in general or J2ME programmers looking to work with MIDP 2.0. Knudsen explains programming in a clear, thorough manner. The few questions that I could not find answers to in his book (and there were definately only a few), I was able to e-mail the author and received quick, detailed responses.
Rating:
Summary: the best J2ME resource available
Review: After reading the first edition of Knudsen's book, I was able to successfully write a J2ME application that is now being distributed by major cellular service providers. I had no prior experience with J2ME and gained all of my knowledge from that book. I picked up the second edition as soon as it came out and was extremely pleased with the new information presented. It is a "must have" for anyone interested in learning J2ME in general or J2ME programmers looking to work with MIDP 2.0. Knudsen explains programming in a clear, thorough manner. The few questions that I could not find answers to in his book (and there were definately only a few), I was able to e-mail the author and received quick, detailed responses.
Rating: 
Summary: Sample code does not work
Review: Having read only the first few chapters I was ready to go run the first example. The problem was the server that the Jargoneer application connects to does not exist at the URL used. Not a very impressive start! Hopefully the other examples work.
Rating: 
Summary: Very good introduction to J2ME CLDC/MIDP
Review: I am commenting on the First Edition of this book. I own two books on introductory J2ME development in a CLDC/MIDP environment: this is the better of the two. Mr. Knudsen writes well (no silly jokes or other distracting nonsense), and covers the core material one needs to begin programming MIDlets. Chapter 12 in the first edition is extremely useful, wherein the practical use of message digests on the client side are illustrated. All in all, a good book for the bookshelf, and one I recommend to friends interested in J2ME CLDC/MIDP programming.
Rating:
Summary: Very good introduction to J2ME CLDC/MIDP
Review: I am commenting on the First Edition of this book. I own two books on introductory J2ME development in a CLDC/MIDP environment: this is the better of the two. Mr. Knudsen writes well (no silly jokes or other distracting nonsense), and covers the core material one needs to begin programming MIDlets. Chapter 12 in the first edition is extremely useful, wherein the practical use of message digests on the client side are illustrated. All in all, a good book for the bookshelf, and one I recommend to friends interested in J2ME CLDC/MIDP programming.
Rating:
Summary: Get up and running really fast.
Review: I just got the pleasure of finishing this book. After just two days of reading I wrote my first MIDLet. Using a Servlet and a MIDLet I created an app that runs on a cell phone. I mean how cool is that. And Jonathan's writing style makes it very easy to understand and to read. No rereading over pages because you couldn't understand what you just read. If you are a Java programmer, as that is one requirement, that you know how to program in Java already, and you want to write apps for PDAs and Cell Phones, then this is the book to buy.
Rating:
Summary: THE BEST BOOK ABOUT J2ME
Review: I read the first edition of this book. John did a great job on that book. The second edition is even better. The second edition has tons of code. This book is easy to read. You need to be an experienced developer to work with J2ME. I would recommand this book to anyone who wants to learn J2ME. This book is a smart investment.
Rating:
Summary: THE BEST BOOK ABOUT J2ME
Review: I read the first edition of this book. John did a great job on that book. The second edition is even better. The second edition has tons of code. This book is easy to read. You need to be an experienced developer to work with J2ME. I would recommand this book to anyone who wants to learn J2ME. This book is a smart investment.
Rating:
Summary: Really cool INTRO book on J2ME
Review: This book is a pleasure to read. The style is concise but clear,
the code clean and simple, and compile and works perfectly.
Besides you will have clear, detailed explanation (not only directives or instructions) on how to compile and run it.
As and added bonus, the books uses mainly Ant for building the examples so you can integrated this new knowledge nicely using the tools you should be using for your usual development projects in Java. I give it only 4 stars because the book title should be INTRO to J2ME development as the coverage is broad (forms, networking, persistent storage, evena nice chapter on games!) but not terribly deep in any area. But if you are new to J2ME and hate wading through the docs buy this book and you will not regret it!
The price is reasonable, too.
Rating: 
Summary: Daft
Review: This book is really, really daft, because to date there is only a minute number of mobile phones available on the planet which implement MIDP 2.0. You can't imagine how painful that is, because chances are you won't be able to run Knudsen's code on your device. Not only that, you won't even be able to compile it with your version 1 tools. It's a shame really, it's otherwise a good intro to J2ME with plenty of code and an appendix which serves as a reference. Pity that we'll all have to wait at least for another year to use this book while the mobile device manufacturers get up to speed. I for one am a bitterly disappointed programmer, I can tell you that, and wish I hadn't spend my last bucks on this book.
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