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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><!-- Generated by javadoc (build 1.4.2_02) on Thu Nov 13 17:20:39 PST 2003 --><TITLE>TopicPublisher (Java 2 Platform Ent. Ed. v1.4)</TITLE><META NAME="keywords" CONTENT="javax.jms.TopicPublisher interface"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="TopicPublisher (Java 2 Platform Ent. Ed. v1.4)";}</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="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><b>Java<sup><font size=-2>TM</font></sup> 2 Platform<br>Ent. Ed. v1.4</b></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../javax/jms/TopicConnectionFactory.html" title="interface in javax.jms"><B>PREV CLASS</B></A> <A HREF="../../javax/jms/TopicSession.html" title="interface in javax.jms"><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="TopicPublisher.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">javax.jms</FONT><BR>Interface TopicPublisher</H2><DL><DT><B>All Superinterfaces:</B> <DD><A HREF="../../javax/jms/MessageProducer.html" title="interface in javax.jms">MessageProducer</A></DD></DL><HR><DL><DT>public interface <B>TopicPublisher</B><DT>extends <A HREF="../../javax/jms/MessageProducer.html" title="interface in javax.jms">MessageProducer</A></DL><P>A client uses a <CODE>TopicPublisher</CODE> object to publish messages on a topic. A <CODE>TopicPublisher</CODE> object is the publish-subscribe form of a message producer. <P>Normally, the <CODE>Topic</CODE> is specified when a <CODE>TopicPublisher</CODE> is created. In this case, an attempt to use the <CODE>publish</CODE> methods for an unidentified <CODE>TopicPublisher</CODE> will throw a <CODE>java.lang.UnsupportedOperationException</CODE>. <P>If the <CODE>TopicPublisher</CODE> is created with an unidentified <CODE>Topic</CODE>, an attempt to use the <CODE>publish</CODE> methods that assume that the <CODE>Topic</CODE> has been identified will throw a <CODE>java.lang.UnsupportedOperationException</CODE>. <P>During the execution of its <CODE>publish</CODE> method, a message must not be changed by other threads within the client. If the message is modified, the result of the <CODE>publish</CODE> is undefined. <P>After publishing a message, a client may retain and modify it without affecting the message that has been published. The same message object may be published multiple times. <P>The following message headers are set as part of publishing a message: <code>JMSDestination</code>, <code>JMSDeliveryMode</code>, <code>JMSExpiration</code>, <code>JMSPriority</code>, <code>JMSMessageID</code> and <code>JMSTimeStamp</code>. When the message is published, the values of these headers are ignored. After completion of the <CODE>publish</CODE>, the headers hold the values specified by the method publishing the message. It is possible for the <CODE>publish</CODE> method not to set <code>JMSMessageID</code> and <code>JMSTimeStamp</code> if the setting of these headers is explicitly disabled by the <code>MessageProducer.setDisableMessageID</code> or <code>MessageProducer.setDisableMessageTimestamp</code> method.<P>Creating a <CODE>MessageProducer</CODE> provides the same features as creating a <CODE>TopicPublisher</CODE>. A <CODE>MessageProducer</CODE> object is recommended when creating new code. The <CODE>TopicPublisher</CODE> is provided to support existing code.<P>Because <CODE>TopicPublisher</CODE> inherits from <CODE>MessageProducer</CODE>, it inherits the <CODE>send</CODE> methods that are a part of the <CODE>MessageProducer</CODE> interface. Using the <CODE>send</CODE> methods will have the same effect as using the <CODE>publish</CODE> methods: they are functionally the same.<P><P><DL><DT><B>Version:</B></DT> <DD>1.1 February 2, 2002</DD><DT><B>Author:</B></DT> <DD>Mark Hapner, Rich Burridge, Kate Stout</DD><DT><B>See Also:</B><DD><A HREF="../../javax/jms/Session.html#createProducer(javax.jms.Destination)"><CODE>Session.createProducer(Destination)</CODE></A>, <A HREF="../../javax/jms/TopicSession.html#createPublisher(javax.jms.Topic)"><CODE>TopicSession.createPublisher(Topic)</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> <A HREF="../../javax/jms/Topic.html" title="interface in javax.jms">Topic</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../javax/jms/TopicPublisher.html#getTopic()">getTopic</A></B>()</CODE><BR> Gets the topic associated with this <CODE>TopicPublisher</CODE>.</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="../../javax/jms/TopicPublisher.html#publish(javax.jms.Message)">publish</A></B>(<A HREF="../../javax/jms/Message.html" title="interface in javax.jms">Message</A> message)</CODE><BR> Publishes a message to the topic. </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="../../javax/jms/TopicPublisher.html#publish(javax.jms.Message, int, int, long)">publish</A></B>(<A HREF="../../javax/jms/Message.html" title="interface in javax.jms">Message</A> message, int deliveryMode, int priority, long timeToLive)</CODE><BR> Publishes a message to the topic, specifying delivery mode, priority, and time to live.</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="../../javax/jms/TopicPublisher.html#publish(javax.jms.Topic, javax.jms.Message)">publish</A></B>(<A HREF="../../javax/jms/Topic.html" title="interface in javax.jms">Topic</A> topic, <A HREF="../../javax/jms/Message.html" title="interface in javax.jms">Message</A> message)</CODE><BR> Publishes a message to a topic for an unidentified message producer. </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="../../javax/jms/TopicPublisher.html#publish(javax.jms.Topic, javax.jms.Message, int, int, long)">publish</A></B>(<A HREF="../../javax/jms/Topic.html" title="interface in javax.jms">Topic</A> topic, <A HREF="../../javax/jms/Message.html" title="interface in javax.jms">Message</A> message, int deliveryMode, int priority, long timeToLive)</CODE><BR> Publishes a message to a topic for an unidentified message producer, specifying delivery mode, priority and time to live. </TD></TR></TABLE> <A NAME="methods_inherited_from_class_javax.jms.MessageProducer"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from interface javax.jms.<A HREF="../../javax/jms/MessageProducer.html" title="interface in javax.jms">MessageProducer</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor">⌨️ 快捷键说明
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