This method is called once before any entry of the matrix is visited.</p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>rows</code> - number of rows of the matrix</dd><dd><code>columns</code> - number of columns of the matrix</dd><dd><code>startRow</code> - Initial row index</dd><dd><code>endRow</code> - Final row index (inclusive)</dd><dd><code>startColumn</code> - Initial column index</dd><dd><code>endColumn</code> - Final column index (inclusive)</dd></dl>
</li>
</ul>
<a name="visit