Head First Java, 2nd Edition

Key to the authors' teaching style are carefully designed graphics. Rather than explain class inheritance (to cite one example) primarily with text, the authors use a series of tree diagrams that clarify the mechanism far more succinctly. The diagrams are carefully annotated with arrows and notes. Also characteristic of the unique teaching strategy is heavy reliance on exercises, in which the reader is asked to complete partial classes, write whole new code segments and do design work. Though there's little discussion of why the exercises' correct answers are what they are, it's clear that the practice work was carefully designed to reinforce the lesson at hand. If you've waited this long to give Java a try, this book is a great choice. --David Wall

Topics covered: The Java programming language for people with no Java experience, and even people with no programming experience at all. Key concepts read like a list of Java features: Object oriented design, variable type and scope, object properties and methods, inheritance and polymorphism, exceptions, graphical user interfaces (GUIs), network connectivity, Java archives (JAR files), and Remote Method Invocation (RMI).

Product Description
Learning a complex new language is no easy task especially when it s an object-oriented computer programming language like Java. You might think the problem is your brain. It seems to have a mind of its own, a mind that doesn't always want to take in the dry, technical stuff you're forced to study.

The fact is your brain craves novelty. It's constantly searching, scanning, waiting for something unusual to happen. After all, that's the way it was built to help you stay alive. It takes all the routine, ordinary, dull stuff and filters it to the background so it won't interfere with your brain's real work--recording things that matter. How does your brain know what matters? It's like the creators of the Head First approach say, suppose you're out for a hike and a tiger jumps in front of you, what happens in your brain? Neurons fire. Emotions crank up. Chemicals surge.

That's how your brain knows.

And that's how your brain will learn Java. Head First Java combines puzzles, strong visuals, mysteries, and soul-searching interviews with famous Java objects to engage you in many different ways. It's fast, it's fun, and its effective. And, despite its playful appearance, Head First Java is serious stuff: a complete introduction to object-oriented programming and Java. You'll learn everything from the fundamentals to advanced topics, including threads, network sockets, and distributed programming with RMI. And the new. second edition focuses on Java 5.0, the latest version of the Java language and development platform. Because Java 5.0 is a major update to the platform, with deep, code-level changes, even more careful study and implementation is required. So learning the Head First way is more important than ever.

If you've read a Head First book, you know what to expect--a visually rich format designed for the way your brain works. If you haven't, you're in for a treat. You'll see why people say it's unlike any other Java book you've ever read.

By exploiting how your brain works, Head First Java compresses the time it takes to learn and retain--complex information. Its unique approach not only shows you what you need to know about Java syntax, it teaches you to think like a Java programmer. If you want to be bored, buy some other book. But if you want to understand Java, this book's for you.

With those questions in mind, I started to read "Head First Java". Since I consider myself a Java expert (I wrote a Java book myself, after all), I decided that I would NOT read the book from cover to cover. Instead, I would randomly flip through the book for the humorous stories and photos. I figured that if I cannot learn much new about Java from a "beginner" book, I can at least have some fun.

Geez, I was wrong. I was ADDICTED to the book's short stories, annotated code snippets, mock interviews, puzzle games and brain exercises. They are not only entertaining but also informative. It may be a beginner's book but the stuff they cover are definitely deep enough for expert readers as well (e.g. multiple inheritance, polymorphism, inner classes, threads, RMI, ... just to name a few). The best of all is that I can actually remember the things I learned from the book because I associate them with the stories and pictures. I guess it has something to do with the fact that both sides of my brain are active when reading this book: The right side is for the stories and the left side is for the technical and logic stuff.

There are other great Java books (e.g. "Thinking in Java" by Bruce Eckel) in the market. But they are all very serious and require the readers to spend hours to read entire chapters. The great thing about "Head First Java" is that the bite-size code snippets and stories allow me to learn something about Java in my 5-10 minutes spare time, one piece a time.

The overall writing style is casual and enlightened. The presentation style (fonts and placements of graphical elements) fits the content very well. The book covers a wide variety of Java topics including: basic code structure and language syntax, OOP concepts, math and numbers, exception handling, the Swing GUI library, serialization, network, and distributed computing.

Of course, the casual style is not for everyone. I know people who love the re-assuring feeling from "serious" books. But I can re-assure you that Kathy and Bert are authoritative figures in the Java training community. The content is absolutely first class. I highly recommend "Head First Java" for both Java beginners and expert readers.


An Amazing Achievment   November 14, 2003
Thomas Paul (Plainview, NY USA)
129 out of 137 found this review helpful

Who do Kathy Sierra and Bert Bates think they are? Don't they know that learning a programming language is supposed to be hard? Don't they know that it is supposed to involve suffering? Apparently not, as they have written a complete introduction to Java that is fun to read and easy to understand. If we don't stamp this out now, students will start expecting their teachers to be entertaining!

The book is an excellent introduction to Java. It covers all the typical topics of a basic introductory text and some extra including serialization, networking, and distributed computing. Each topic is covered in a fun way with important information highlighted. The authors use stories, fake interviews, pictures, and assorted other clever techniques to catch your imagination and make the topics memorable. There are plenty of exercises (with answers) to help you check to be sure you understood each chapter. And there are plenty of fun programs to code including a cool music machine instead of the typical "reverse a String" exercises.

If you are looking for a traditional text then this book is definitely not for you. Instructors should think carefully whether this book fits in with their style of teaching. This book is not for everyone but if you want to learn Java and object oriented programming in fun and unique way then this is the book you want. Now I just have to figure out how to keep it away from my students.


My all-time favorite tutorial on Java (or anything else)   January 8, 2004
Thomas Duff (Portland, OR United States)
48 out of 49 found this review helpful

In all my years of reading technical books trying to learn new skills, the closest I have ever come to a book like this was when I first read a Dummies book. I liked it because it presented information in a humorous fashion that made things easy to comprehend. This style takes that type of learning to a whole new level. Using a combination of writing style, graphics, illustrations, and sample code, they draw you into each subject in such a way that you can't help but learn and understand.

This book starts with the basics of Java and progresses clear through to RMI and JINI. Granted, those last subjects are just touched on, but at least you're exposed to them. Even after all the Java tutorial manuals I've read, I still got a lot out of this book. For instance, I always was sort of fuzzy on the event listener logic. The Head First explanation was one of the most understandable (and entertaining) treatments of it that I've ever read. Likewise, inner classes were always confusing to me. The coverage of that subject here makes it sound so simple.

And why do you need this if you're a Notes/Domino developer? If you've never worked with Java, you're probably intimidated by the subject and afraid to get started. Don't be... This is the most fun you'll ever have learning a new skill. While it doesn't talk specifically about how to code a Java agent in a Notes application, you'll learn the concepts and the syntax you'll need to be able to do that. Once you have those skills in place, you can move on to a book specific to using Java in a Notes environment (such as Domino Development With Java by Tony Patton). The book doesn't assume you're a programming guru to get started. You will learn a lot from this material, and it's something you need to do in order to continue to stay relevant in the IBM/Lotus world.

Conclusion
If you're a C/C++ guru approaching Java, this book may not be for you. You'll already know much of the material from your exposure to those languages. But if you're a mere mortal like the rest of us, you need to buy this book if you're looking to learn Java. I am SO hoping that the Head First approach to tech writing becomes a series. If it does, I'm ruined for life in what I will expect from a book. This is really great stuff!


Who said learning could not be fun.   June 4, 2003
Johannes de Jong (Netherlands)
37 out of 39 found this review helpful

I had the pleasure of reading Head First Java as Kathy & Bert turned out the chapters. Though the book has not hit the stores yet, I'd like to share my experience reading the work copy of the book.

I'm a 47 year old programmer that has basically seen it all in my 25+ years in IT. Though I've been busy with Java for more than 2 years, I until recently still saw myself as an absolute beginner. Why you might ask? Well for starters all my Java was simply "hobby" work, I did not use it at work. Secondly, and the most important reason, is that I simply did not understand and grasp some of the key concepts of OO that one needs to know to be able to fully use the capabilities Java has to offer.

As fate would have it, the work copy Kathy & Bert's book became available to me as I started to work in a new department where I have to program in Java. I was drowning. I had to keep on asking the youngsters on the team for assistance. You can't believe what that does for your self-confidence. But as I read more and more of Head First Java I found myself sitting in tech meetings not only understanding what was being said but I was actually coming up with some fresh ideas that helped us re-design our systems to become fully OO.

Why is that so. Simply because of the unique way Kathy and Bert teach and share their knowledge. The best way for me to describe this book is by using the teacher at school that we all have encountered in our school careers. You know the one that enthusiastically drew the most elaborate drawing on the black board to explain his point, the one that simply generates interest in his subject purely because of his sheer love of the subject he teaches. Now imagine that teacher in book form. The Head First way, your favourite teacher in a book.

I can carry on for quite awhile about the unique style of the Head First way, but I suggest you download the sample chapters at O'Reilly or go download the "demo" at Kathy & Bert's own site...

What has this book done for me. For one it finally made me grasp Polymorphism, and the use of interfaces. Though I've used it before, like a parrot without understanding, I never saw it's real strength. Now I use it all the time. I can't believe I programmed Java without them. Head First Java turned me into a Java OO programmer instead of a Java procedural programmer. Yep one can write pretty neat procedural programs in Java.

If you are a Java programmer that has problems understanding the finer points of the language and OO in general I suggest you go out and buy the book.

I want to end with a word of caution. This book, because of it's uniqueness, might not appeal to everybody. I suggest you browse (or download the demo) the book before buying. You will know immediately know if the book is for you.

If you want learning to be fun buy this book.


Makes other books look like the API   July 17, 2003
Sandy Kopelman (Los Angeles, CA)
27 out of 28 found this review helpful

In short, it's a great book. It will make all your other Java books
indistinguishable from a printed copy of the API. This is how to
actually understand Java. I kept yelling "So THAT's how it works!" at
least once a chapter. It's really amazing how much I realized I didn't
know. Well, didn't understand. I knew stuff and could do the right
syntax and all that but now I think I really get Java a lot more. In
particular OO and polymorphism which, let's face it, are the kind of
thing that seem simple at first but are slippery to really get ahold of.

The exercises are excellent. I think I could learn more from just the
Head First exercises than from the other books on Java I've bought,
combined. When you buy this, do them all at least once.

I want to point out one particular thing they do with the weirder
concepts. They'll introduce and explain a topic, and then you go to the
next page and there's a picture of someone going "Huh???" And the text
will say yeah, this is a weird concept, and start again and explain it a
different way. And then clarify it again. By then you really do
understand it. I think this is great because it acknowledges that some
of these concepts are just hard to learn. No matter how brilliant you are or
whether you're the love child of Bill Joy and Carly Fiorina.

You absolutely must have this book if you want to learn Java, and you
absolutely must have this book if you've been programming for a couple
years but you have to admit deep down you're still a little fuzzy on a
how things really work.