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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>PeerGroupAdvertisement (Project JXTA J2SE)</TITLE><META NAME="keywords" CONTENT="net.jxta.protocol.PeerGroupAdvertisement class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="PeerGroupAdvertisement (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/PeerGroupAdvertisement.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/protocol/PeerAdvertisement.html" title="class in net.jxta.protocol"><B>PREV CLASS</B></A> <A HREF="../../../net/jxta/protocol/PeerInfoQueryMessage.html" title="class in net.jxta.protocol"><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="PeerGroupAdvertisement.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 | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <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.protocol</FONT><BR>Class PeerGroupAdvertisement</H2><PRE>java.lang.Object <IMG SRC="../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../net/jxta/document/Advertisement.html" title="class in net.jxta.document">net.jxta.document.Advertisement</A> <IMG SRC="../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../net/jxta/document/ExtendableAdvertisement.html" title="class in net.jxta.document">net.jxta.document.ExtendableAdvertisement</A> <IMG SRC="../../../resources/inherit.gif" ALT="extended by"><B>net.jxta.protocol.PeerGroupAdvertisement</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>java.lang.Cloneable</DD></DL><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../net/jxta/impl/protocol/PeerGroupAdv.html" title="class in net.jxta.impl.protocol">PeerGroupAdv</A></DD></DL><HR><DL><DT>public abstract class <B>PeerGroupAdvertisement</B><DT>extends <A HREF="../../../net/jxta/document/ExtendableAdvertisement.html" title="class in net.jxta.document">ExtendableAdvertisement</A><DT>implements java.lang.Cloneable</DL><P>Describes a peer group and references additional information required for instantiating it. The PeerGroup method newGroup performs the task of instantiating a PeerGroup given its advertisement (provided the required subsequent documents can actually be found).<P><P><DL><DT><B>See Also:</B><DD><A HREF="../../../net/jxta/platform/ModuleSpecID.html" title="class in net.jxta.platform"><CODE>ModuleSpecID</CODE></A>, <A HREF="../../../net/jxta/protocol/ModuleImplAdvertisement.html" title="class in net.jxta.protocol"><CODE>ModuleImplAdvertisement</CODE></A>, <A HREF="../../../net/jxta/peergroup/PeerGroup.html" title="interface in net.jxta.peergroup"><CODE>PeerGroup</CODE></A></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../net/jxta/protocol/PeerGroupAdvertisement.html#PeerGroupAdvertisement()">PeerGroupAdvertisement</A></B>()</CODE><BR> </TD></TR></TABLE> <!-- ========== 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> java.lang.Object</CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/protocol/PeerGroupAdvertisement.html#clone()">clone</A></B>()</CODE><BR> Clone this PeerGroupAdvertisement</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/protocol/PeerGroupAdvertisement.html#getAdvertisementType()">getAdvertisementType</A></B>()</CODE><BR> {@inheritDoc}</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/protocol/PeerGroupAdvertisement.html#getBaseAdvType()">getBaseAdvType</A></B>()</CODE><BR> Returns the base type of this advertisement hierarchy. Typically, only the most basic advertisement of a type will implement this method and declare it as <code>final</code>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/protocol/PeerGroupAdvertisement.html#getDescription()">getDescription</A></B>()</CODE><BR> returns the description</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../net/jxta/id/ID.html" title="class in net.jxta.id">ID</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/protocol/PeerGroupAdvertisement.html#getID()">getID</A></B>()</CODE><BR> Returns a unique ID for indexing purposes. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../net/jxta/platform/ModuleSpecID.html" title="class in net.jxta.platform">ModuleSpecID</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/protocol/PeerGroupAdvertisement.html#getModuleSpecID()">getModuleSpecID</A></B>()</CODE><BR> Returns the id of the group spec that this uses.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/protocol/PeerGroupAdvertisement.html#getName()">getName</A></B>()</CODE><BR> returns the name of the group.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../net/jxta/peergroup/PeerGroupID.html" title="class in net.jxta.peergroup">PeerGroupID</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/protocol/PeerGroupAdvertisement.html#getPeerGroupID()">getPeerGroupID</A></B>()</CODE><BR> Returns the id of the group.</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/protocol/PeerGroupAdvertisement.html#getServiceParam(net.jxta.id.ID)">getServiceParam</A></B>(<A HREF="../../../net/jxta/id/ID.html" title="class in net.jxta.id">ID</A> key)</CODE><BR> Returns the parameter element that matches the given key from the service parameters table. </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Hashtable</CODE></FONT></TD><TD><CODE><B><A HREF="../../../net/jxta/protocol/PeerGroupAdvertisement.html#getServiceParams()">getServiceParams</A></B>()</CODE><BR> Returns the sets of parameters for all services. </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/protocol/PeerGroupAdvertisement.html#putServiceParam(net.jxta.id.ID, net.jxta.document.Element)">putServiceParam</A></B>(<A HREF="../../../net/jxta/id/ID.html" title="class in net.jxta.id">ID</A> key, <A HREF="../../../net/jxta/document/Element.html" title="interface in net.jxta.document">Element</A> param)</CODE><BR> Puts a service parameter in the service parameters table under the given key. </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/protocol/PeerGroupAdvertisement.html#removeServiceParam(net.jxta.id.ID)">removeServiceParam</A></B>(<A HREF="../../../net/jxta/id/ID.html" title="class in net.jxta.id">ID</A> key)</CODE><BR> Removes and returns the parameter element that matches the given key from the service parameters table. </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/protocol/PeerGroupAdvertisement.html#setDescription(java.lang.String)">setDescription</A></B>(java.lang.String description)</CODE><BR> sets the description</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/protocol/PeerGroupAdvertisement.html#setModuleSpecID(net.jxta.platform.ModuleSpecID)">setModuleSpecID</A></B>(<A HREF="../../../net/jxta/platform/ModuleSpecID.html" title="class in net.jxta.platform">ModuleSpecID</A> sid)</CODE><BR> Sets the id of the group spec that this peer group uses.</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/protocol/PeerGroupAdvertisement.html#setName(java.lang.String)">setName</A></B>(java.lang.String name)</CODE><BR> sets the name of the group.</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/protocol/PeerGroupAdvertisement.html#setPeerGroupID(net.jxta.peergroup.PeerGroupID)">setPeerGroupID</A></B>(<A HREF="../../../net/jxta/peergroup/PeerGroupID.html" title="class in net.jxta.peergroup">PeerGroupID</A> gid)</CODE><BR> Sets the id of the group.</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/protocol/PeerGroupAdvertisement.html#setServiceParams(java.util.Hashtable)">setServiceParams</A></B>(java.util.Hashtable params)</CODE><BR> sets the sets of parameters for all services. </TD></TR></TABLE> <A NAME="methods_inherited_from_class_net.jxta.document.ExtendableAdvertisement"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class net.jxta.document.<A HREF="../../../net/jxta/document/ExtendableAdvertisement.html" title="class in net.jxta.document">ExtendableAdvertisement</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../net/jxta/document/ExtendableAdvertisement.html#getDocument(net.jxta.document.MimeMediaType)">getDocument</A>, <A HREF="../../../net/jxta/document/ExtendableAdvertisement.html#handleElement(net.jxta.document.Element)">handleElement</A></CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_net.jxta.document.Advertisement"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class net.jxta.document.<A HREF="../../../net/jxta/document/Advertisement.html" title="class in net.jxta.document">Advertisement</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../../net/jxta/document/Advertisement.html#getAdvType()">getAdvType</A>, <A HREF="../../../net/jxta/document/Advertisement.html#getIndexFields()">getIndexFields</A>, <A HREF="../../../net/jxta/document/Advertisement.html#toString()">toString</A></CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.Object</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TD></TR></TABLE><A NAME="PeerGroupAdvertisement()"><!-- --></A><H3>PeerGroupAdvertisement</H3><PRE>public <B>PeerGroupAdvertisement</B>()</PRE><DL></DL><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="getAdvertisementType()"><!-- --></A><H3>getAdvertisementType</H3><PRE>public static java.lang.String <B>getAdvertisementType</B>()</PRE><DL><DD>{@inheritDoc}<P>⌨️ 快捷键说明
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