BoxAndWhiskerRenderer boxRenderer = new BoxAndWhiskerRenderer(); DefaultCategoryDataset catData = new DefaultCategoryDataset(); catData.addValue(boxData.getMeanValue(0, 0), "Mean", boxData.getColumnKey(0)); catData.addValue(boxData.getMeanValue(0, 1), "Mean", boxData.getColumnKey(1)); LineAndShapeRenderer lineRenderer = new LineAndShapeRenderer(); CategoryAxis xAxis = new CategoryAxis("Type");