ctionSource2</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>actionExpression</code> - the action expression.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.2</dd>
</dl>
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<h4>isOnPostback</h4>
<pre>public&nbsp;boolean&nbsp;isOnPostback()</pre>
<div class="block"><p class="changed_added_2_2">If <code>true</code> this
 component will operate on postback.</p></div>
<