tpSessionEvent</a>&nbsp;se)</code>
<div class="block">Receives notification that a session is about to be invalidated.</div>
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<td class="colFirst"><code>default void</code></td>
<td class="colLast"><span class="typeNameLabel">HttpSessionActivationListener.</span><code><span class="memberNameLink"><a href="../../../../jakarta/servlet/http/HttpSessionActivationListener.html#sessionDidActivate-jakarta.servlet.http.HttpSessionEvent-">sessionDidActivate</a></span>(<a href="../../