// Bar category
category = new DefaultMutableTreeNode("Bar Charts");
top.add(category);
defaultMutableTreeNode = new DefaultMutableTreeNode(new ChartInfo("BarChart01 - Basic Bar Chart", new BarChart01().getChart()));
category.add(defaultMutableTreeNode);
defaultMutableTreeNode = new DefaultMutableTreeNode(new ChartInfo("BarChart02 - Date Categories", new BarChart02().getChart()));
category.add(defaultMutableTreeNode);