rclass for all the cell values in the
 column (always String)</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code>getColumnClass</code>&nbsp;in interface&nbsp;<code>javax.swing.table.TableModel</code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>columnIndex</code> - the column index</dd>
<dt><span class="strong">Returns:</span></dt><dd>the class of the column</dd></dl>
</li>
</ul>
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<h4>getColu