package java.util.regex
Classes for matching character sequences against patterns specified by regular expressions.
An instance of the Pattern class represents a regular expression that is specified in string form in a syntax similar to that used by Perl.
Instances of the Matcher class are used to match character sequences against a given pattern. Input is provided to matchers via the CharSequence interface in order to support matching against characters from a wide variety of input sources.
Unless otherwise noted, passing a null argument to a method in any class or interface in this package will cause a NullPointerException to be thrown.
An excellent tutorial and overview of regular expressions is Mastering Regular Expressions, Jeffrey E. F. Friedl, O'Reilly and Associates, 1997.
Related Packages
Package
Description
Contains the collections framework, some internationalization support classes, a service loader, properties, random number generation, string parsing and scanning classes, base64 encoding and decoding, a bit array, and several miscellaneous utility classes.
Class
Description
The result of a match operation.
A compiled representation of a regular expression.
Unchecked exception thrown to indicate a syntax error in a regular-expression pattern.
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