itle="class or interface in java.io" class="externalLink">IOException</a></code> - Throws IO Exception if the out refuses to write.</dd>
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<h4>getExactSizeOnDisk</h4>
<pre class="methodSignature">static&nbsp;long&nbsp;getExactSizeOnDisk&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/List.html?is-external=true" title="class or interface in java.util