| /* | |
| * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. | |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| * | |
| * This code is free software; you can redistribute it and/or modify it | |
| * under the terms of the GNU General Public License version 2 only, as | |
| * published by the Free Software Foundation. Oracle designates this | |
| * particular file as subject to the "Classpath" exception as provided | |
| * by Oracle in the LICENSE file that accompanied this code. | |
| * | |
| * This code is distributed in the hope that it will be useful, but WITHOUT | |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| * version 2 for more details (a copy is included in the LICENSE file that | |
| * accompanied this code). | |
| * | |
| * You should have received a copy of the GNU General Public License version | |
| * 2 along with this work; if not, write to the Free Software Foundation, | |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| * | |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
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| */ | |
| /** | |
| * Classes for matching character sequences against patterns specified | |
| * by regular expressions. | |
| * | |
| * <p> An instance of the {@link java.util.regex.Pattern} class | |
| * represents a regular expression that is specified in string form in | |
| * a syntax similar to that used by Perl. | |
| * | |
| * <p> Instances of the {@link java.util.regex.Matcher} class are used | |
| * to match character sequences against a given pattern. Input is | |
| * provided to matchers via the {@link java.lang.CharSequence} | |
| * interface in order to support matching against characters from a | |
| * wide variety of input sources. </p> | |
| * | |
| * <p> Unless otherwise noted, passing a {@code null} argument to a | |
| * method in any class or interface in this package will cause a | |
| * {@link java.lang.NullPointerException NullPointerException} to be | |
| * thrown. | |
| * | |
| * <h2>Related Documentation</h2> | |
| * | |
| * <p> An excellent tutorial and overview of regular expressions is <a | |
| * href="http://www.oreilly.com/catalog/regex/"><i>Mastering Regular | |
| * Expressions</i>, Jeffrey E. F. Friedl, O'Reilly and Associates, | |
| * 1997.</a> </p> | |
| * | |
| * @since 1.4 | |
| * @author Mike McCloskey | |
| * @author Mark Reinhold | |
| */ | |
| package java.util.regex; |