book

Java NIO

Name: Java NIO
Author: Ron Hitchens
ISBN: 9780596002886

by Ron Hitchens

August 2009

Beginner to intermediate

302 pages

English

O'Reilly Media, Inc.

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Dedication
Preface
OrganizationWho Should Read This BookSoftware and VersionsConventions Used in This BookFont ConventionsHow to Contact UsAcknowledgments
1. Introduction
1.1. I/O Versus CPU Time1.2. No Longer CPU Bound1.3. Getting to the Good Stuff1.4. I/O Concepts1.4.1. Buffer Handling1.4.1.1. Scatter/gather1.4.2. Virtual Memory1.4.3. Memory Paging1.4.4. File I/O1.4.4.1. Memory-mapped files1.4.4.2. File locking1.4.5. Stream I/O1.5. Summary
2. Buffers
2.1. Buffer Basics2.1.1. Attributes2.1.2. Buffer API2.1.3. Accessing2.1.4. Filling2.1.5. Flipping2.1.6. Draining2.1.7. Compacting2.1.8. Marking2.1.9. Comparing2.1.10. Bulk Moves2.2. Creating Buffers2.3. Duplicating Buffers2.4. Byte Buffers2.4.1. Byte Ordering2.4.2. Direct Buffers2.4.3. View Buffers2.4.4. Data Element Views2.4.5. Accessing Unsigned Data2.4.6. Memory-Mapped Buffers2.5. Summary
3. Channels
3.1. Channel Basics3.1.1. Opening Channels3.1.2. Using Channels3.1.3. Closing Channels3.2. Scatter/Gather3.3. File Channels3.3.1. Accessing Files3.3.2. File Locking3.4. Memory-Mapped Files3.4.1. Channel-to-Channel Transfers3.5. Socket Channels3.5.1. Nonblocking Mode3.5.2. ServerSocketChannel3.5.3. SocketChannel3.5.4. DatagramChannel3.6. Pipes3.7. The Channels Utility Class3.8. Summary
4. Selectors
4.1. Selector Basics4.1.1. The Selector, SelectableChannel, and SelectionKey Classes4.1.2. Setting Up Selectors4.2. Using Selection Keys4.3. Using Selectors4.3.1. The Selection Process4.3.2. Stopping the Selection Process4.3.3. Managing Selection Keys4.3.4. Concurrency4.4. Asynchronous Closability4.5. Selection Scaling4.6. Summary
5. Regular Expressions
5.1. Regular Expression Basics5.2. The Java Regular Expression API5.2.1. The CharSequence Interface5.2.2. The Pattern Class5.2.2.1. Splitting strings with the Pattern class5.2.3. The Matcher Class5.3. Regular Expression Methods of the String Class5.4. Java Regular Expression Syntax5.5. An Object-Oriented File Grep5.6. Summary
6. Character Sets
6.1. Character Set Basics6.2. Charsets6.2.1. The Charset Class6.2.2. Comparing Charsets6.2.3. Charset Encoders6.2.3.1. The CoderResult class6.2.4. Charset Decoders6.3. The Charset Service Provider Interface6.3.1. Creating Custom Charsets6.3.2. Providing Your Custom Charsets6.4. Summary
A. NIO and the JNI
B. Selectable Channels SPI

C. NIO Quick Reference
C.1. Package java.nioC.1.1. BufferC.1.2. BufferOverflowExceptionC.1.3. BufferUnderflowExceptionC.1.4. ByteBufferC.1.5. ByteOrderC.1.6. CharBufferC.1.7. DoubleBufferC.1.8. FloatBufferC.1.9. IntBufferC.1.10. InvalidMarkExceptionC.1.11. LongBufferC.1.12. MappedByteBufferC.1.13. ReadOnlyBufferExceptionC.1.14. ShortBufferC.2. Package java.nio.channelsC.2.1. AlreadyConnectedExceptionC.2.2. AsynchronousCloseExceptionC.2.3. ByteChannelC.2.4. CancelledKeyExceptionC.2.5. ChannelC.2.6. ChannelsC.2.7. ClosedByInterruptExceptionC.2.8. ClosedChannelExceptionC.2.9. ClosedSelectorExceptionC.2.10. ConnectionPendingExceptionC.2.11. DatagramChannelC.2.12. FileChannelC.2.13. FileLockC.2.14. FileLockInterruptionExceptionC.2.15. GatheringByteChannelC.2.16. IllegalBlockingModeExceptionC.2.17. IllegalSelectorExceptionC.2.18. InterruptibleChannelC.2.19. NoConnectionPendingExceptionC.2.20. NonReadableChannelExceptionC.2.21. NonWritableChannelExceptionC.2.22. NotYetBoundExceptionC.2.23. NotYetConnectedExceptionC.2.24. OverlappingFileLockExceptionC.2.25. PipeC.2.26. ReadableByteChannelC.2.27. ScatteringByteChannelC.2.28. SelectableChannelC.2.29. SelectionKeyC.2.30. SelectorC.2.31. ServerSocketChannelC.2.32. SocketChannelC.2.33. UnresolvedAddressExceptionC.2.34. UnsupportedAddressTypeExceptionC.2.35. WritableByteChannelC.3. Package java.nio.channels.spiC.3.1. AbstractInterruptibleChannelC.3.2. AbstractSelectableChannelC.3.3. AbstractSelectionKeyC.3.4. AbstractSelectorC.3.5. SelectorProviderC.4. Package java.nio.charsetC.4.1. CharacterCodingExceptionC.4.2. CharsetC.4.3. CharsetDecoderC.4.4. CharsetEncoderC.4.5. CoderMalfunctionErrorC.4.6. CoderResultC.4.7. CodingErrorActionC.4.8. IllegalCharsetNameExceptionC.4.9. MalformedInputExceptionC.4.10. UnmappableCharacterExceptionC.4.11. UnsupportedCharsetExceptionC.5. Package java.nio.charset.spiC.5.1. CharsetProviderC.6. Package java.util.regexC.6.1. MatcherC.6.2. PatternC.6.3. PatternSyntaxException
Index
Colophon
Copyright

Overview

Many serious Java programmers, especially enterprise Java programmers, consider the new I/O API--called NIO for New Input/Output--the most important feature in the 1.4 version of the Java 2 Standard Edition. The NIO package includes many things that have been missing from previous editions of Java that are critical to writing high-performance, large-scale applications: improvements in the areas of buffer management, scalable network and file I/O, character-set support, and regular expression matching. Most of all, it boosts performance and speed dramatically.Java NIO explores the new I/O capabilities of version 1.4 in detail and shows you how to put these features to work to greatly improve the efficiency of the Java code you write. This compact volume examines the typical challenges that Java programmers face with I/O and shows you how to take advantage of the capabilities of the new I/O features. You?ll learn how to put these tools to work using examples of common, real-world I/O problems and see how the new features have a direct impact on responsiveness, scalability, and reliability. The book includes:

A rundown of the new features in NIO
Basic and advanced I/O Concepts
Binary I/O and the new buffer classes
Memory mapped files and file locking
Character I/O: encoding, decoding and transforming character data
Regular Expressions and the new java.util.regex package
Muliplexing with java.nio

Because the NIO APIs supplement the I/O features of version 1.3, rather than replace them, you'll also learn when to use new APIs and when the older 1.3 I/O APIs are better suited to your particular application.Java NIO is for any Java programmer who is interested in learning how to boost I/O performance, but if you're developing applications where performance is critical, such as game computing or large-scale enterprise applications, you'll want to give this book a permanent spot on your bookshelf. With the NIO APIs, Java no longer takes a backseat to any language when it comes to performance. Java NIO will help you realize the benefits of these exciting new features.

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