optaplanner-benchmark/src/main/java/org/optaplanner/benchmark/impl/report/BenchmarkReport.java
private CategoryPlot createBarChartPlot(DefaultCategoryDataset dataset,
            String yAxisLabel, NumberFormat yAxisNumberFormat) {
        CategoryAxis xAxis = new CategoryAxis("Data");
        xAxis.setCategoryMargin(0.40);
        NumberAxis yAxis = new NumberAxis(yAxisLabel);
        yAxis.setNumberFormatOverride(yAxisNumberFormat);
        BarRenderer renderer = createBarChartRenderer(yAxisNumberFormat);
        CategoryPlot plot = new CategoryPlot(dataset, xAxis, yAxis, renderer);
        plot.setOrientation(PlotOrientation.VERTICAL);
        return plot;
    }
private CategoryPlot createBarChartPlot(DefaultCategoryDataset dataset,
            String yAxisLabel, NumberFormat yAxisNumberFormat) {
        CategoryAxis xAxis = new CategoryAxis("Data");
        xAxis.setCategoryMargin(0.40);
        NumberAxis yAxis = new NumberAxis(yAxisLabel);
        yAxis.setNumberFormatOverride(yAxisNumberFormat);
        BarRenderer renderer = createBarChartRenderer(yAxisNumberFormat);
        CategoryPlot plot = new CategoryPlot(dataset, xAxis, yAxis, renderer);
        plot.setOrientation(PlotOrientation.VERTICAL);
        return plot;
    }
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