Java IO.pdf - Nguyen Dang Binh

Java I/O
the word "subscribe" in the Subject: field. Archives of this and several related lists may be
perused at http://www.DistributedObjects.com/portfolio/archives/patterns/index.html.
A.3 The java.io Package
The original source for much of the information contained herein about I/O is the javadoc
documentation for the java.io package. You should have downloaded this with the JDK, but
it's also available online at:
http://java.sun.com/products/jdk/1.2/docs/api/java/io/package-summary.html (Java
1.2)
http://java.sun.com/products/jdk/1.1/docs/api/Package-java.io.html (Java 1.1)
http://java.sun.com/products/jdk/1.0.2/api/Package-java.io.html (Java 1.0)
The class library documentation is, however, woefully incomplete. While it explains what
each method does, it often fails to explain how, why, or when you should use those methods.
Furthermore, it only occasionally discusses assumptions about the behavior of those
methods—assumptions that are crucial for anyone not merely using but also subclassing
particular classes. There are many implicit assumptions about what particular methods should
do (for instance, that a close() method of a filter input stream also closes any other streams
it's connected to), and these are generally not documented anywhere (or at least they weren't
until I wrote this book).
I've tried to document all of these assumptions in this book, but if you're faced with a new
class not covered here, the canonical reference is the source code itself. The JDK includes
Java source code for the java packages. You'll find it in a file called src.zip in your JDK
distribution. Sometimes the only way to figure out exactly what Sun intended particular
classes to do or how they expected them to do it is to read the source code for those classes.
A.4 Network Programming
In many ways this book is a prequel to my previous book with O'Reilly, Java Network
Programming. Although written first, Java Network Programming presumes a solid
familiarity with input and output, streams, and readers and writers as discussed in this book.
Java Network Programming explains the fundamental protocols and technology that underlie
the Internet, shows you how to communicate with sockets, provides detailed examples of
working network clients and servers, and even develops content and protocol handlers. If you
want to learn more about TCP/IP, HTTP, URLs, sockets and server sockets, and other
elements of Internet programming in Java, you should definitely pick up Java Network
Programming. (There's probably an ad for it in the back of this very book.)
The Centre for Distance-spanning Technology (CDT) runs the unmoderated javanetworking@cdt.luth.se
list for informal discussion of Java network programming, which I
participate in. To subscribe, send an email containing the word "subscribe" in the body of the
message to java-networking-request@cdt.luth.se. An archive of the list and complete
instructions are available from http://www.cdt.luth.se/~peppar/java/java-networking-list/.
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