ataContentHandler class for the specified type should 
 be available to the Jakarta Mail implementation for this to work right.
 i.e., to do <code>setContent(foobar, "application/x-foobar")</code>,
 a DataContentHandler for "application/x-foobar" should be installed.
 Refer to the Java Activation Framework for more information.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>obj</code> - A java object.</dd>
<dd><code>type</code> - MIME type of this object.</dd>
<dt><span class="thr