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<h2> 3b. Other SAX APIs</h2>
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<div align="center"><b><i>Link Summary</i></b></div>
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<dt><b><i>Local Links</i></b></dt>
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<li><a href="../../api/org/xml/sax/package-summary.html">org.xml.sax</a>
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<li><a href="../../api/internal/com/sun/xml/util/package-summary.html">com.sun.xml.util</a></li>
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<p><b><i>Glossary Terms</i></b></p>
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<dd><a href="../glossary.html#namespace">namespace</a> <a href="../glossary.html#prolog"></a>
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<p> This page continues the overview of the SAX APIs, summarizing those you are
most likely to use when building a SAX-based application.
<h3><a name="addlSAX"></a>Additional SAX Interfaces</h3>
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<p>In addition to the APIs described in the overview section, the <a href="../../api/org/xml/sax/package-summary.html">org.xml.sax</a>
package defines a few other interfaces that you are likely to use when you
write a SAX application.</p>
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<td width="22%"><b><i>Interface</i></b></td>
<td width="78%"><b><i>Description</i></b></td>
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<p>AttributeList</p>
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<p> Defines methods that return the attributes defined for a tag, and
their values. When the <code>startElement</code> method is invoked in
a <code>DocumentHandler</code>, for example, an <code>AttributeList</code>
object that encapsulates the attribute values is passed as an argument.</p>
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<td width="22%">Locator</td>
<td width="78%"> Defines methods that return document-location information.
Includes methods like <code>getSystemId()</code> which returns the local
URL for a document and <code>getLineNumber()</code>, which gives the starting
position of the last item that the SAX parser processed. Less frequently
used methods include <code>getPublicId()</code>, which returns a document
URI, and <code>getColumnNumber()</code>.</td>
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<h3><a name="util"></a>Utility Package</h3>
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<p>The utility package, <code><a href="../../api/internal/com/sun/xml/util/package-summary.html">com.sun.xml.util</a></code>,
contains a number of classes that are helpful for building real-world applications.</p>
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<td width="22%"><b><i>Class</i></b></td>
<td width="78%"><b><i>Description</i></b></td>
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<p>MessageCatalog</p>
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<p> This class helps when building localized applications. It lets you
use an identifier to look up a string for a given language. The code
uses the same identifier, but changing the language produces messages
that are appropriate for the selected locale.</p>
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<td width="22%">XmlChars</td>
<td width="78%"> The methods in this class tell whether a character is valid
in a given role (for example, as part of a name) according to the XML
specification. </td>
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<td width="22%">XmlNames</td>
<td width="78%"> The methods in this class tell whether an identifier is
valid in a given role (for example, as a name, token, or qualified name)
according to the XML and XML <a href="../glossary.html#namespace">Namespace</a>
specifications. </td>
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