title: Apache POI DataFormatter Returns Scientific Notation
body: <p>I have an xlsx file I'm reading with apache poi 3.17 in java 6.  In one instance I have a cell with the value, 123456789011. This is read into java as a NUMERIC CellTypeEnum Cell.  When I use DataFormatter to get the value of the cell like this:</p>
  
  <p><code>DataFormatter formatter = new DataFormatter(Locale.US);
   String strVal = formatter.formatCellValue(cell);</code></p>
  
  <p>The String value comes out as "1.234567+11".  I need the real value in the cell which is "123456789011".  How can I get that?</p>
  
  <p>I already tried using BigDecimal in Java to convert the String, but that returns "123456700000" because that's the best it can do with the given information; meaning I need to get the correct value from the actual cell object.  I also tried using cell.getNumericCellValue() but that returns a double, which has a limit too small to handle the original value, so it is retrieved as "1.234567E11" which has the same issue as the other method of retrieval.  </p>
  
  <p>Is there a way to get the value as a String from the original Cell as it is entered in the xlsx?  I have no power over the original xlsx.</p>
  
  <p>Thank you.</p>