code: public Double getColumnValueAsDouble(final int col, final double defaultValue) {
  		Double value = getColumnValueAsDouble(col);
  		if (value == null) {
  			value = defaultValue;
  		}
  		return value;
  	}
docs: Gets the column value as double.
  
  @param col          the col
  @param defaultValue the default value
  @return the column value as double