August 2009
Beginner to intermediate
302 pages
9h
English
Content preview from Java NIO
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Chapter 5. Regular Expressions
Hey, it’s a kind of magic.
—The Highlander
In
this
chapter, we’ll discuss the API of
the classes in the new
java.util.regex
package (see Figure 5-1).
JSR 51, the Java
Specification Request defining the new I/O
capabilities, also specifies the addition of regular expression
processing to the Java platform. While regular expressions, strictly
speaking, are not I/O, they are most commonly used
to scan text data read from files or streams.
 |
Figure 5-1. The regular expression classes
You’ll learn how to use the new Java APIs to do the same powerful pattern matching that has been available to users of perl, egrep, and other text-processing tools. A detailed exploration of regular expression syntax is beyond the scope of this book, but a working familiarity with regular expressions is assumed. If you’re new to regular expressions, want to improve your skills, or are baffled by this chapter, I recommend you pick up a good reference. O’Reilly publishes an authoritative regular expression book (it’s even cited in the JDK documentation): Mastering Regular Expressions, by Jeffrey E. F. Friedl (http://www.oreilly.com/catalog/regex/).
Regular Expression Basics
A regular expression is a sequence of characters that describe, or express, a pattern of characters you are interested in matching within a target character sequence. Regular expressions have been widely available ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.