bar_chart

public class BarChart extends JFrame {
 private JFreeChart barchart;
 private ChartPanel panel;
 public BarChart(){
 panel = createChart(createData());
 setLayout(new BorderLayout());
 add(panel,BorderLayout.CENTER);
 this.setSize(600, 400);
        this.setTitle("Diagram Bar");
        this.setLocationRelativeTo(null);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 }
        private DefaultCategoryDataset createData(){
        DefaultCategoryDataset data = new DefaultCategoryDataset();

         //
        data.addValue(2266,"ODP", "");
        data.addValue(1041,"PDP", "");
        data.addValue(1155,"Positif", "");
        data.addValue(102,"Kematian", "");
        data.addValue(59,"Sembuh", "");

     return data;
 }

        private ChartPanel createChart(DefaultCategoryDataset data) {
        barchart = ChartFactory.createBarChart3D("Data Pantauan COVID-19 Jakarta - 29 Maret 2020", "Pasien",
                                                 "Jumlah Pasien", data, PlotOrientation.VERTICAL, true, true, false);
        barchart.setBackgroundPaint(new Color(135,206,250));
        CategoryPlot plot = (CategoryPlot) barchart.getPlot();
        plot.setNoDataMessage("Data Tidak ada");
        CategoryAxis axis = plot.getDomainAxis();
        axis.setCategoryLabelPositions(CategoryLabelPositions.STANDARD);
        CategoryItemRenderer renderer = plot.getRenderer();
        renderer.setBaseItemLabelsVisible(true);
        BarRenderer barRenderer = (BarRenderer) renderer;
        barRenderer.setItemMargin(0.1D);
        barRenderer.setDrawBarOutline(true);
        return new ChartPanel(barchart);
 }