e length of the content body in the response In HTTP servlets, this method sets the HTTP Content-Length
 header.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>len</code> - a long specifying the length of the content being returned to the client; sets the Content-Length header</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>Servlet 3.1</dd>
</dl>
</li>
</ul>
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