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| JavaTM 2 Platform Standard Ed. 5.0
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## Package java.util.regex

Classes for matching character sequences against patterns specified by regular expressions.

See:
Description

Interface Summary
MatchResult | The result of a match operation.

Class Summary
Matcher | An engine that performs match operations on a ``character sequence`` by interpreting a `Pattern`.
Pattern | A compiled representation of a regular expression.

Exception Summary
PatternSyntaxException | Unchecked exception thrown to indicate a syntax error in a regular-expression pattern.

## Package java.util.regex Description

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 similiar 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.

## Related Documentation

An excellent tutorial and overview of regular expressions is Mastering Regular Expressions, Jeffrey E. F. Friedl, O'Reilly and Associates, 1997.

Since:
  1.4

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2004 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.