How to detect and display desired message when clicked on DefaultMutableTreeNode in java?

Question

我正在尝试制作一个软件，其中在单击jtree的子节点时，检测到选择了哪个节点，希望显示相应的消息。

Answer 1

You will need to add a TreeSelectionListener to the model containing your nodes. The event arguments contain data for the node(s) selected. Here is some example documentation .