.matrix.data">MatrixBlockDataOutput</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rlen</code> - ?</dd>
<dd><code>rows</code> - sparse block</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html?is-external=true" title="class or interface in java.io" class="externalLink">IOException</a></code> - if IOException occurs</dd>
</dl>
</li>
</ul>
</li>
</ul>
</section>
</li>
</u