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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><TITLE>Element (Project JXTA J2SE)</TITLE><META NAME="keywords" CONTENT="net.jxta.document.Element interface"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="Element (Project JXTA J2SE)";}</SCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/Element.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM><a href='http://www.jxta.org' target='_blank'>Project JXTA</a></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../net/jxta/document/Document.html" title="interface in net.jxta.document"><B>PREV CLASS</B></A> <A HREF="../../../net/jxta/document/StructuredDocument.html" title="interface in net.jxta.document"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html" target="_top"><B>FRAMES</B></A> <A HREF="Element.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">net.jxta.document</FONT><BR>Interface Element</H2><DL><DT><B>All Known Subinterfaces:</B> <DD><A HREF="../../../net/jxta/document/StructuredDocument.html" title="interface in net.jxta.document">StructuredDocument</A>, <A HREF="../../../net/jxta/document/StructuredTextDocument.html" title="interface in net.jxta.document">StructuredTextDocument</A>, <A HREF="../../../net/jxta/impl/document/TextDocumentCommon.html" title="interface in net.jxta.impl.document">TextDocumentCommon</A>, <A HREF="../../../net/jxta/document/TextElement.html" title="interface in net.jxta.document">TextElement</A>, <A HREF="../../../net/jxta/document/XMLDocument.html" title="interface in net.jxta.document">XMLDocument</A>, <A HREF="../../../net/jxta/impl/document/XMLDocumentCommon.html" title="interface in net.jxta.impl.document">XMLDocumentCommon</A>, <A HREF="../../../net/jxta/document/XMLElement.html" title="interface in net.jxta.document">XMLElement</A></DD></DL><DL><DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../net/jxta/impl/document/DOMXMLDocument.html" title="class in net.jxta.impl.document">DOMXMLDocument</A>, <A HREF="../../../net/jxta/impl/document/LiteXMLDocument.html" title="class in net.jxta.impl.document">LiteXMLDocument</A>, <A HREF="../../../net/jxta/impl/document/PlainTextDocument.html" title="class in net.jxta.impl.document">PlainTextDocument</A>, <A HREF="../../../net/jxta/impl/document/TextElementCommon.html" title="class in net.jxta.impl.document">TextElementCommon</A>, <A HREF="../../../net/jxta/impl/document/XMLElementCommon.html" title="class in net.jxta.impl.document">XMLElementCommon</A></DD></DL><HR><DL><DT>public interface <B>Element</B></DL><P>An element represents a portion of a <A HREF="../../../net/jxta/document/StructuredDocument.html" title="interface in net.jxta.document"><CODE>StructuredDocument</CODE></A>. An element is identifiable by a <code>key</code> and may also optionally have a <code>value</code>. Each Element also maintains a collection of references to other elements, its <emphasis>children</emphasis>. Elmenents can be composed into arbitrary hierarchical structures forming complex data structures. <p/>Element instances are always associated with a <A HREF="../../../net/jxta/document/StructuredDocument.html" title="interface in net.jxta.document"><CODE>StructuredDocument</CODE></A>. A <A HREF="../../../net/jxta/document/StructuredDocument.html" title="interface in net.jxta.document"><CODE>StructuredDocument</CODE></A> is a specialized form of Element with additional features that make it appropriate for acting as the root of a hierarchy of elements.<P><P><DL><DT><B>See Also:</B><DD><A HREF="../../../net/jxta/document/Document.html" title="interface in net.jxta.document"><CODE>Document</CODE></A>, <A HREF="../../../net/jxta/document/StructuredDocument.html" title="interface in net.jxta.document"><CODE>StructuredDocument</CODE></A>, <A HREF="../../../net/jxta/document/StructuredDocumentFactory.html" title="class in net.jxta.document"><CODE>StructuredDocumentFactory</CODE></A>, <A HREF="../../../net/jxta/document/StructuredTextDocument.html" title="interface in net.jxta.document"><CODE>StructuredTextDocument</CODE></A>, <A HREF="../../../net/jxta/document/TextElement.html" title="interface in net.jxta.document"><CODE>TextElement</CODE></A></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/document/Element.html#appendChild(net.jxta.document.Element)">appendChild</A></B>(<A HREF="../../../net/jxta/document/Element.html" title="interface in net.jxta.document">Element</A> element)</CODE><BR> Add a child element to this element. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Enumeration</CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/document/Element.html#getChildren()">getChildren</A></B>()</CODE><BR> Returns an enumeration of the immediate children of this element.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Enumeration</CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/document/Element.html#getChildren(java.lang.Object)">getChildren</A></B>(java.lang.Object key)</CODE><BR> Returns an enumeration of the immediate children of this element whose name match the specified key.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.Object</CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/document/Element.html#getKey()">getKey</A></B>()</CODE><BR> Get the key associated with this Element.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../net/jxta/document/Element.html" title="interface in net.jxta.document">Element</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/document/Element.html#getParent()">getParent</A></B>()</CODE><BR> Get the parent element of this element. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../net/jxta/document/StructuredDocument.html" title="interface in net.jxta.document">StructuredDocument</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/document/Element.html#getRoot()">getRoot</A></B>()</CODE><BR> Get the root Element of the hierarchy this Element belongs to.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.Object</CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/document/Element.html#getValue()">getValue</A></B>()</CODE>?? 快捷鍵說明
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