code: public double getValueAtAsDouble(final int row, final int col) {
  		final Object valueAt = getValueAt(row, col);
  		double number = 0;
  		if (valueAt != null && !valueAt.toString().equals("")) {
  			number = Double.parseDouble(valueAt.toString().trim());
  		}
  		return number;
  	}
docs: ///////////////////////////////////////////////////////////////////////////////////////