d
 of reading the data from an <code>InputStream</code> it uses the
 <code>writeTo</code> method to examine the data.  This is more
 efficient in the common case of a <code>DataHandler</code>
 created with an object and a MIME type (for example, a
 "text/plain" String) because all the I/O is done in this
 thread.  In the case requiring an <code>InputStream</code> the
 <code>DataHandler</code> uses a thread, a pair of pipe streams,
 and the <code>writeTo</code> method to produce the data. <p></div>
<dl>
<dt>