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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<html>
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<head>
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<!--
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Copyright (c) 2000, 2006, Oracle and/or its affiliates. All rights reserved.
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DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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This code is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License version 2 only, as
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published by the Free Software Foundation. Oracle designates this
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particular file as subject to the "Classpath" exception as provided
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by Oracle in the LICENSE file that accompanied this code.
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This code is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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version 2 for more details (a copy is included in the LICENSE file that
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accompanied this code).
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You should have received a copy of the GNU General Public License version
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2 along with this work; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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or visit www.oracle.com if you need additional information or have any
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questions.
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-->
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</head>
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<body bgcolor="white">
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Classes for matching character sequences against patterns specified by regular
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expressions.
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<p> An instance of the {@link java.util.regex.Pattern} class represents a
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regular expression that is specified in string form in a syntax similar to
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that used by Perl.
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<p> Instances of the {@link java.util.regex.Matcher} class are used to match
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character sequences against a given pattern. Input is provided to matchers via
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the {@link java.lang.CharSequence} interface in order to support matching
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against characters from a wide variety of input sources. </p>
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<p> Unless otherwise noted, passing a <tt>null</tt> argument to a method
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in any class or interface in this package will cause a
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{@link java.lang.NullPointerException NullPointerException} to be thrown.
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<h2>Related Documentation</h2>
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<p> An excellent tutorial and overview of regular expressions is <a
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href="http://www.oreilly.com/catalog/regex/"><i>Mastering Regular
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Expressions</i>, Jeffrey E. F. Friedl, O'Reilly and Associates, 1997.</a> </p>
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<!--
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For overviews, tutorials, examples, guides, and tool documentation, please see:
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<ul>
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<li><a href="">##### REFER TO NON-SPEC DOCUMENTATION HERE #####</a>
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</ul>
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-->
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@since 1.4
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@author Mike McCloskey
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@author Mark Reinhold
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</body>
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</html>
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