如何在JTree内部渲染组件（Swing Component Hierachy）

Question

For some specific purpose I am trying to manipulate UI by just accessing Swing/AWT component hierarchy, and I am stuck at JTree.

I have a JTree which is rendered using a custom TreeCellRenderer, and have JCheckBox in each node.

I am trying to obtain a specific JCheckBox object used to render a specific node, to programmatically change it's state, what I have is JTree Component object.

I couldn't find a way to get the JCheckBox component created to render a specific node.

If I keep calling Container.getComponents() recursively, I reach upto :

class javax.swing.JTree
class javax.swing.CellRendererPane
class javax.swing.tree.DefaultTreeCellRenderer

but these doen't seems to giving out components rendered by custom renderers.

Answer 1

As @JB-Nizet pointed out in comment, I solved my problem by updating custom model object using reflection.

Object modelObject = nodeToSelect.getUserObject();
Method method = modelObject.getClass().getMethod("setSelected", boolean.class);
method.invoke(modelObject,true);