question: public DataPanel ( String title ) { setLayout ( new BorderLayout ( ) ) ; positionSer = new XYSeries ( "True Position" ) ; XYSeriesCollection dataset1 = new XYSeriesCollection ( positionSer ) ; JFreeChart chart = ChartFactory . createTimeSeriesChart ( "Position" , "Time (seconds)" , "Angle (degrees)" , dataset1 , true , true , false ) ; plot = ( XYPlot ) chart . getPlot ( ) ; plot . setRenderer ( 1 , new DefaultXYItemRenderer ( ) ) ; plot . mapDatasetToRangeAxis ( 1 , 1 ) ; ValueAxis axis = plot . getDomainAxis ( ) ; axis . setAutoRange ( true ) ; axis . setFixedAutoRange ( 20000.0 ) ; ChartUtilities . applyCurrentTheme ( chart ) ; ChartPanel chartPanel = new ChartPanel ( chart ) ; chartPanel . setPreferredSize ( new java . awt . Dimension ( 500 , 270 ) ) ; exportXlsBtn . setActionCommand ( "EXPORT_XLS" ) ; exportCsvBtn . setActionCommand ( "EXPORT_CSV" ) ; exportXlsBtn . addActionListener ( this ) ; exportCsvBtn . addActionListener ( this ) ; JPanel exportPanel = new JPanel ( ) ; exportPanel . add ( exportXlsBtn ) ; exportPanel . add ( exportCsvBtn ) ; JPanel mainPanel = new JPanel ( new BorderLayout ( ) ) ; mainPanel . add ( chartPanel ) ; mainPanel . add ( exportPanel , BorderLayout . SOUTH ) ; add ( mainPanel ) ; }
target:  Creates a new self-contained demo panel.