code: public String get(int columnIndex) throws IOException {
  		checkClosed();
  
  		if (columnIndex > -1 && columnIndex < columnsCount) {
  			return values[columnIndex];
  		} else {
  			return "";
  		}
  	}
docs: Returns the current column value for a given column index.
  
  @param columnIndex
  The index of the column.
  @return The current column value.
  @exception IOException
  Thrown if this object has already been closed.