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 * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
 * 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
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
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 * 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).
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Provides interfaces to SAX2 facilities that
conformant SAX drivers won't necessarily support.

This package is independent of the SAX2 core, though the functionality
exposed generally needs to be implemented within a parser core.
That independence has several consequences:

SAX2 drivers are not required to recognize these handlers.

You cannot assume that the class files will be present in every SAX2
installation.
This package may be updated independently of SAX2 (i.e. new
handlers and classes may be added without updating SAX2 itself).
The new handlers are not implemented by the SAX2
org.xml.sax.helpers.DefaultHandler or
org.xml.sax.helpers.XMLFilterImpl classes.
You can subclass these if you need such behavior, or
use the helper classes found here.
The handlers need to be registered differently than core SAX2
handlers.

This package, SAX2-ext, is a standardized extension to SAX2.  It is
designed both to allow SAX parsers to pass certain types of information
to applications, and to serve as a simple model for other SAX2 parser
extension packages.  Not all such extension packages should need to
be recognized directly by parsers, however.
As an example, most validation systems can be cleanly layered on top
of parsers supporting the standardized SAX2 interfaces.
API Note:
The SAX API, originally developed at
the SAX Project,
has been defined by Java SE since 1.4.
Since:
1.4/**
 * Provides interfaces to SAX2 facilities that
 * conformant SAX drivers won't necessarily support.
 *
 *
 * <p>
 * This package is independent of the SAX2 core, though the functionality
 * exposed generally needs to be implemented within a parser core.
 * That independence has several consequences:
 *
 * <ul>
 *
 * <li>SAX2 drivers are <em>not</em> required to recognize these handlers.
 * </li>
 *
 * <li>You cannot assume that the class files will be present in every SAX2
 * installation.</li>
 *
 * <li>This package may be updated independently of SAX2 (i.e. new
 * handlers and classes may be added without updating SAX2 itself).</li>
 *
 * <li>The new handlers are not implemented by the SAX2
 * <code>org.xml.sax.helpers.DefaultHandler</code> or
 * <code>org.xml.sax.helpers.XMLFilterImpl</code> classes.
 * You can subclass these if you need such behavior, or
 * use the helper classes found here.</li>
 *
 * <li>The handlers need to be registered differently than core SAX2
 * handlers.</li>
 *
 * </ul>
 *
 * <p>This package, SAX2-ext, is a standardized extension to SAX2.  It is
 * designed both to allow SAX parsers to pass certain types of information
 * to applications, and to serve as a simple model for other SAX2 parser
 * extension packages.  Not all such extension packages should need to
 * be recognized directly by parsers, however.
 * As an example, most validation systems can be cleanly layered on top
 * of parsers supporting the standardized SAX2 interfaces.
 *
 * @apiNote The SAX API, originally developed at
 * <a href="http://www.saxproject.org">the SAX Project</a>,
 * has been defined by Java SE since 1.4.
 *
 * @since 1.4
 */

package org.xml.sax.ext;