question: private static JFreeChart createChart ( ) { XYSeries series1 = new XYSeries ( "Series 1" ) ; series1 . add ( 1.0 , 1.0 ) ; series1 . add ( 2.0 , 2.0 ) ; series1 . add ( 3.0 , 3.0 ) ; XYDataset dataset = new XYSeriesCollection ( series1 ) ; return ChartFactory . createXYStepChart ( "Step Chart" , "Domain" , "Range" , dataset , PlotOrientation . VERTICAL , true , true , true ) ; }
target:  Create a horizontal bar chart with sample data in the range -3 to +3.