any threads that subsequently call
 the <code>service</code> method according to the rules in JSR-133 (i.e. there is a 'happens before' relationship
 between <code>init</code> and <code>service</code>).

 <p>
 The servlet container cannot place the servlet into service if the <code>init</code> method
 <ol>
 <li>Throws a <code>ServletException</code>
 <li>Does not return within a time period defined by the Web server
 </ol></div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>config</code> - a <code>Servl