java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;</pre>
<div class="block"><p class="changed_added_2_0"><span
 class="changed_modified_2_2">The</span> <strong>Flash</strong>
 concept is taken from Ruby on Rails and provides a way to pass
 temporary objects between the user views generated by the faces
 lifecycle.  As in Rails, anything one places in the flash will be
 exposed to the next vie