es any I/O exceptions that may occur</dd>
</dl>
</li>
</ul>
<a name="readExternal-java.io.ObjectInput-">
<!--   -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>readExternal</h4>
<pre>public&nbsp;void&nbsp;readExternal(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/ObjectInput.html?is-external=true" title="class or interface in java.io">ObjectInput</a>&nbsp;in)
                  throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" tit