* @return
*/
public CellHandle getCell(String address)
throws CellNotFoundException, WorkSheetNotFoundException{
int shtpos = address.indexOf("!");
if(shtpos<0)throw new CellNotFoundException(address + " not found. You need to specify a location in the format: Sheet1!A1");
String sheetstr = address.substring(0,shtpos);
WorkSheetHandle sht = this.getWorkSheet(sheetstr);
String celstr = address.substring(shtpos+1);
return sht.getCell(celstr);
}