StackedBarChart row key is not added to DefaultCategoryDataSet

Question

I have two entity Classes: A and B. A has B entities, and I have a Map defined in the following format: Map.

I want to

Answer 1

Absent your sscce the problem is not apparent. It may help to compare your data set to a typical CategoryDataset such as this one that has distinct series (row) and category (column) keys. Also, adding a CategoryItemLabelGenerator may aid debugging.

renderer.setBaseItemLabelGenerator(
    new StandardCategoryItemLabelGenerator(
        "{0} {1} {2}", NumberFormat.getInstance()));
renderer.setBaseItemLabelsVisible(true);