/*
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the "License").  You may not use this file except
 * in compliance with the License.
 *
 * You can obtain a copy of the license at
 * https://jaxp.dev.java.net/CDDLv1.0.html.
 * See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL
 * HEADER in each file and include the License file at
 * https://jaxp.dev.java.net/CDDLv1.0.html
 * If applicable add the following below this CDDL HEADER
 * with the fields enclosed by brackets "[]" replaced with
 * your own identifying information: Portions Copyright
 * [year] [name of copyright owner]
 */

/*
 * $Id: XMLEntityReader.java,v 1.3 2005/11/03 17:02:21 jeffsuttor Exp $
 * @(#)XMLConstants.java	1.15 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
 */

package javax.xml;

/**
 * <p>Utility class to contain basic XML values as constants.</p>
 *
 * @author <a href="mailto:Jeff.Suttor@Sun.com">Jeff Suttor</a>
 * @version $Revision: 1.2 $, $Date: 2005/06/10 03:50:26 $
 * @see <a href="http://www.w3.org/TR/xml11/">Extensible Markup Language (XML) 1.1</a>
 * @see <a href="http://www.w3.org/TR/REC-xml">Extensible Markup Language (XML) 1.0 (Second Edition)</a>
 * @see <a href="http://www.w3.org/XML/xml-V10-2e-errata">XML 1.0 Second Edition Specification Errata</a>
 * @see <a href="http://www.w3.org/TR/xml-names11/">Namespaces in XML 1.1</a>
 * @see <a href="http://www.w3.org/TR/REC-xml-names">Namespaces in XML</a>
 * @see <a href="http://www.w3.org/XML/xml-names-19990114-errata">Namespaces in XML Errata</a>
 * @see <a href="http://www.w3.org/TR/xmlschema-1/">XML Schema Part 1: Structures</a>
 * @since 1.5
 **/

public final class XMLConstants {
	
    /**
     * <p>Private constructor to prevent instantiation.</p>
     */
	private XMLConstants() {
	}

    /**
     * <p>Namespace URI to use to represent that there is no Namespace.</p>
     *
     * <p>Defined by the Namespace specification to be "".</p>
     *
     * @see <a href="http://www.w3.org/TR/REC-xml-names/#defaulting">
     * Namespaces in XML, 5.2 Namespace Defaulting</a>
     */
    public static final String NULL_NS_URI = "";

    /**
     * <p>Prefix to use to represent the default XML Namespace.</p>
     *
     * <p>Defined by the XML specification to be "".</p>
     *
     * @see <a
     * href="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">
     * Namespaces in XML, 3. Qualified Names</a>
     */
    public static final String DEFAULT_NS_PREFIX = "";

    /**
     * <p>The official XML Namespace name URI.</p>
     *
     * <p>Defined by the XML specification to be
     * "<code>http://www.w3.org/XML/1998/namespace</code>".</p>
     *
     * @see <a
     * href="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">
     * Namespaces in XML, 3. Qualified Names</a>
     */
    public static final String XML_NS_URI =
        "http://www.w3.org/XML/1998/namespace";

    /**
     * <p>The official XML Namespace prefix.</p>
     *
     * <p>Defined by the XML specification to be "<code>xml</code>".</p>
     *
     * @see <a
     * href="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">
     * Namespaces in XML, 3. Qualified Names<</a>
     */
    public static final String XML_NS_PREFIX = "xml";

    /**
     * <p>The official XML attribute used for specifying XML Namespace
     * declarations, {@link #XMLNS_ATTRIBUTE