let.jsp">JspTagException</a></pre>
<div class="block"><p>
 Returns the next object over which the tag should iterate. This method must be provided by concrete subclasses of
 LoopTagSupport to inform the base logic about what objects it should iterate over.
 </p>

 <p>
 It is expected that this method will generally be backed by an Iterator, but this will not always be the case. In
 particular, if retrieving the next object raises the possibility of an exception being thrown, this method allows
 that excepti