vlet container does
 not encode the binary data.

 <p>
 Calling flush() on the ServletOutputStream commits the response.

 Either this method or <a href="#getWriter()"><code>getWriter()</code></a> may be called to write the body, not both, except when <a href="#reset()"><code>reset()</code></a> has
 been called.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>a <a href="ServletOutputStream.html" title="class in jakarta.servlet"><code>ServletOutputStream</code></a> for writing binary data</dd>
<dt>Throws:</dt