/java/javase/11/docs/api/java.base/java/lang/Exception.html?is-external=true" title="class or interface in java.lang" class="externalLink">Exception</a></pre>
<div class="block">The open method prepares the reader to read items.

 The input parameter represents the last checkpoint
 for this reader in a given job instance. The
 checkpoint data is defined by this reader and is
 provided by the checkpointInfo method. The checkpoint
 data provides the reader whatever information it needs
 to resume reading item