</code> of all the names in the <code>MapMessage</code> object.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an enumeration of all the names in this <code>MapMessage</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../javax/jms/JMSException.html" title="class in javax.jms">JMSException</a></code> - if the Jakarta Messaging provider fails to read the message due to some internal error.</dd>
</dl>
</li>
</ul>
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