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Java I/O [Paperback]

Elliotte Rusty Harold
3.7 out of 5 stars  See all reviews (23 customer reviews)
Price: CDN$ 74.99 & FREE Shipping. Details
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Book Description

May 26 2006 0596527500 978-0596527501 Second Edition

All of Java's Input/Output (I/O) facilities are based on streams, which provide simple ways to read and write data of different types. Java provides many different kinds of streams, each with its own application. The universe of streams is divided into four largecategories: input streams and output streams, for reading and writing binary data; and readers and writers, for reading and writing textual (character) data. You're almost certainly familiar with the basic kinds of streams--but did you know that there's a CipherInputStream for reading encrypted data? And a ZipOutputStream for automaticallycompressing data? Do you know how to use buffered streams effectively to make your I/O operations more efficient? Java I/O, 2nd Edition has been updated for Java 5.0 APIs and tells you all you ever need to know about streams--and probably more.

A discussion of I/O wouldn't be complete without treatment of character sets and formatting. Java supports the Unicode standard, which provides definitions for the character sets of most written languages. Consequently, Java is the first programming language that lets you do I/O in virtually any language. Java also provides a sophisticated model for formatting textual and numeric data. Java I/O, 2nd Edition shows you how to control number formatting, use characters aside from the standard (but outdated) ASCII character set, and get a head start on writing truly multilingual software.

Java I/O, 2nd Edition includes:

  • Coverage of all I/O classes and related classes
  • In-depth coverage of Java's number formatting facilities and its support for international character sets

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Product Description

From Amazon

Because it doesn't provide a printf() function like C/C++, some developers think Java isn't up to snuff with files and streams. Author Rusty Harold Elliotte argues against this notion in Java I/O, a book that shows how Java's stream support can help simplify network programming, internationalization, and even compression and encryption.

The book opens with an overview of Java's stream capabilities. (The author defends Java's lack of support for console input/output (I/O) since today's applications use graphical user interfaces anyway.) He shows how to open, read, and write local files in Java applications. His file viewer example presents data in a variety of formats. (This example is improved several times until it winds up supporting different international character sets by the end of the book.)

Next the author covers network programming using URL and network streams, including sockets. Sections on filters show how classes can filter out characters within streams. The tour moves forward to cover data streams, which permit streaming of Java's primitive data types. Details on how to communicate within Java programs using pipes follow. In a notable chapter, the author thoroughly explicates Java's support for encryption, including hashing, the Data Encryption Standard (DES) algorithm, and ciphers.

The last portion of the book explains object serialization, which allows Java objects to save and restore their state, plus it includes sections on Java's support for data compression (and ZIP files) and multilingual Unicode character sets. (Java is prepared to handle virtually any of the world's languages with its reader and writer classes.) Finally, the author shows how you can format output in Java using its support for width and numeric precision APIs.

In all, Elliotte makes a good case that Java streams are a flexible and powerful part of the language, and certainly not a limitation. --Richard Dragan --This text refers to an out of print or unavailable edition of this title.

Review

'If I had to decide the best technical book ever read by me, this would be a real candidate. In my opinion a good programming book should limit itself to covering some well-defined part of its (usually) exhaustive topic. It should be easy to read with well-chose and short code-samples, especially for the critical parts and optionally, the code should grow throughout the chapters and evolve to full working programs at the end. This title fulfils it all... There aren't many illustrations throughout, but the reader will not miss them. The 'in-depth-notes' at strategic places are interesting and reveals a deep knowledge of the subject. So, if you want a fundamental understanding of streams, and data communication and /or a deep understanding of the Java I/O-model, buy it.' - Christer Loefving, Cvue, January 2000 --This text refers to an out of print or unavailable edition of this title.

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Front Cover | Copyright | Table of Contents | Excerpt | Index | Back Cover
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Customer Reviews

Most helpful customer reviews
5.0 out of 5 stars Excellent choice....... March 21 2001
By CG9685
Format:Paperback
First of all, this is not a reference, it explains the organization behind the I/O Library. If you are looking for a reference book to locate answers in under a minute this ISN'T the book for you, instead get 'Java in a Nutshell'. Second of all, this book helps you to learn the I/O classes by constructing a program that you modify throughout the book. If that will annoy you, don't get this book. Overall, I think this is a great book! It was well worth the investment. I had previously encountered I/O documentation in more broadly scoped Java books such as, Beginning Java, in other words not much detail. This book, however, blew me away with its detail, but it is presented in a very down to earth manner. In other words, you don't have to be a rocket scientist to understand what's going on. This book will take you from the top of the I/O class hierarchy and move you down into the specialized sub-classes. All the while explaining to you what each of the classes does and like I said before, a lot of supporting details. Best of all, this book helps you understand I/O by showing you how Sun logically organized the I/O Library. By the time you've finished the book it's much easier to understand how all of the classes come together to offer powerful I/O support. Before I read this book when I looked at the inheritance tree for the I/O Library my reponse was like "you've got to be kidding me! I'll never be able to get all of this down!". But after finishing this book I am in no way intimidated or confused by the I/O classes. Good luck!
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5.0 out of 5 stars Best programming book I've read April 23 2000
Format:Paperback
The basis of Java is to make hard things easy and easy things impossible. And among one of these impossibilites is standard I/O.
After having tried almost every single I/O class in Java and having been only able to get FileReader and FileWriter to work successfully, I decided to buy this book. I was afraid that I would get it and it would be so technical that only people who wear pocket protectors as their standard gear would be able to read it, but this was not a problem. Mr. Harrold was perfectly willing to lay everything out just as clearly as was physically possible, while at the same time still giving an equal amount of importance to examples.
Other reviewers seem to have viewed this as a weakness in the book, but personally, I would say that having an extra 50% percent of stuff you will never need is better than only having half of what is necessary to accomplish anything.
Due to my having bought this book, in the last month I have gone from basic file reading and writing, building my own file reader with a readLine() method of my own make since Sun's is buggy, to internet connections to having most recently written a proxy that logs all events that go on in my internet browser by concurrently handling six I/O operations(an in from the internet to two outs to my browser and log file, and an in from my browser to the two outs of the internet and my log file.) And I say this not to boast my prowess, but to show you just how valuable this book is to anyone who will be doing any Java programming that involves I/O.
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By A Customer
Format:Paperback
This is an excellent book.
After jumping around and reading about a third of it, I was already recommending to some of the newer Java programmers around me to pick it up and get a solid understanding of proper I/O use in Java. I very much recommend this as any Java programmer's second book. Right after learning the language itself, this book should be read followed closely by other O'Reilly titles such as Java Threads and Java Network Programming. Those three books will give an in-depth understanding of the core Java API's for any new Java programmer, and will be of use to you no matter how you are using Java.
Even after three years as a Java developer, I have learned from this book. The author often presents algorithms in clear steps and follows those clear steps with a correct implementation. Because of this clear presentation, the chapter on compression left me for the first time with an understanding of not only how to use the java.util.zip.* classes but how they work. What I learned there in one reading is immediately applicable to what I am working on now. The sections on Files is full of tips on how to use them in a cross platform fashion. Every new Java programmer needs to read that chapter before their applications actually get used.
I was also impressed that several I/O classes missing in the standard library which I have only recently developed myself were presented as well. The StreamCopier and the TeeOutputStream are extremely useful classes that should be incorporated in some fashion into the base API. I wish I had them a long time ago. (A hint: you can also use the TeeOutputStream as a 'Traitor' to peek at your I/O while your program is running and without affecting its execution.) If I have any complaint about this book, it is that there are not more of these types of utilities presented for use by the advanced Java programmer. However, I haven't finished the book yet, so they may still be hidden there.
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Format:Paperback
I'm a C++ programmer that has given himself a crash-course in Java for a project at work. If I had this book earlier, I would have gotten things done a lot faster. Every programmer should be familiar with input and output streams, but how many can say they know the in's and out's of Java's cryptographic streams and piped streams? If asked, could you tell the difference between a BufferedWriter and a PrintWriter? I had to use three books to accumulate the knowledge I could have gained by just reading this one book. If you are a beginning or intermediate Java programmer, don't assume you know everything about Java I/O and what it can do; check out the pearls of wisdom in this book. Needless to say, now I'm writing much better I/O-related Java code because of it, and I believe you will too.
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Most recent customer reviews
1.0 out of 5 stars one of the worst offerings from O'Reilly
1. Style does not engage the reader

2. I was falling asleep after reading 2 pages

3. paper quality is really bad, same is true for binding

4. Read more
Published on Jan. 25 2007 by Arif &Ed : Books,Music And Java
5.0 out of 5 stars Gentle, but, Comprehensive
Gentle, Clear Explanations, Easy to Follow. Covers Internationalization and Unicode. Basic Network Porgramming and Cryptography. Serialization.
Published on March 23 2004 by DK
1.0 out of 5 stars Shame O'Reilly, shame!
I picked up this book to cover multilingual charset issues, which are missing in all the standard Java resources but neatly listed in this title's contents/index. Read more
Published on Oct. 1 2002 by "akira238"
1.0 out of 5 stars I'd pass on this one.
This book does a fair job of covering the topic. I found it semi-useful. I would not recommend it however. Other books give you more value for the money. Read more
Published on Nov. 24 2001
1.0 out of 5 stars Once again, the author has made some terrible choices
This book covers Java I/O in a relatively competent fashion.
However, the author, Mr. Harold, chose to use his very popular website on the day of terror--September 11,... Read more
Published on Sept. 25 2001
4.0 out of 5 stars Excellent for the beginner to intermediate programmer
Great tutorial-like introduction to the Java I/O classes. Not a reference but very useful. A must buy if you want to boost your coding productivity. Read more
Published on Aug. 24 2001 by Dennis Lawler
4.0 out of 5 stars Good, with useful examples, but needs some corrections
The book is good, complete and shows you the details of I/O for Java (you should be at least an intermediate programmer); however, there are some errata that you must check in the... Read more
Published on Aug. 21 2001 by Justo S.
5.0 out of 5 stars Very readable and very complete
For anyone who knows Java's core language and wants to know more about the many ways to perform I/O in Java, then look no further. Read more
Published on Jan. 19 2001 by Amazon Customer
4.0 out of 5 stars Fast track to learning I/O.
This book is well written and informative. My favorite books are those that are written in such a fashion that the words flow from the page straight to my mind, do not past go, do... Read more
Published on July 27 2000 by Mark Miller
3.0 out of 5 stars Long Winded
This is an informative book and starts out well. It tells you more than you could possibly want to know about IO but as the days ween into weeks, you find yourself wondering,... Read more
Published on April 3 2000
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