return NumberFormat.getInstance( ).format( ( (NumberDataElement) de ).getValue( ) );
return ChartUIUtil.getDefaultNumberFormatInstance( ).format( ( (NumberDataElement) de ).getValue( ) );
	private String getValue( DataElement de )	{		if ( de instanceof DateTimeDataElement )		{			Date dt = ( (DateTimeDataElement) de ).getValueAsCalendar( )					.getTime( );			return _sdf.format( dt );		}		else if ( de instanceof NumberDataElement )		{			return NumberFormat.getInstance( ).format( ( (NumberDataElement) de ).getValue( ) );		}		return ""; //$NON-NLS-1$	}