// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-Java
// The path to the documents directory.
String dataDir = Utils.getDataDir(DetectMergedCells.class);
// Instantiate a new Workbook
Workbook wkBook = new Workbook(dataDir + "MergeTrial.xls");
// Get a worksheet in the workbook
Worksheet wkSheet = wkBook.getWorksheets().get("Merge Trial");
// Clear its contents
wkSheet.getCells().clearContents(0, 0, wkSheet.getCells().getMaxDataRow(),
		wkSheet.getCells().getMaxDataColumn());

// Get all merged cell aeras
CellArea[] areas = wkSheet.getCells().getMergedAreas();

// Define some variables
int frow, fcol, erow, ecol;
// Loop through the arraylist and get each cellarea to unmerge it
for (int i = areas.length - 1; i > -1; i--)
{	
	frow = areas[i].StartRow;
	fcol = areas[i].StartColumn;
	erow = areas[i].EndRow;
	ecol = areas[i].EndColumn;
	wkSheet.getCells().unMerge(frow, fcol, erow, ecol);
}
// Save the excel file
wkBook.save(dataDir + "output_MergeTrial.xls");