February 2014
Beginner
1248 pages
62h 25m
English
Content preview from Java™ How To Program (Early Objects), Tenth Edition
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Classes Pattern and Matcher
In addition to the regular-expression capabilities of class String, Java provides other classes in package java.util.regex that help developers manipulate regular expressions. Class Pattern represents a regular expression. Class Matcher contains both a regular-expression pattern and a CharSequence in which to search for the pattern.
CharSequence (package java.lang) is an interface that allows read access to a sequence of characters. The interface requires that the methods charAt, length, subSequence and toString be declared. Both String and StringBuilder implement interface CharSequence, so an instance of either of these classes can be used with class Matcher.
Common Programming Error 14.2
A regular expression ...
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