dataset.setValue(100.0, "Row 1", "Column 1");
        dataset.setValue(200.0, "Row 1", "Column 2");
        JFreeChart chart = ChartFactory.createBarChart(
            "Test", 
            "Categories",
            "Value",
            dataset,
            PlotOrientation.VERTICAL,
            false, 
            false,
            false
        );
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        NumberAxis axis = (NumberAxis) plot.getRangeAxis();