How to get an event both in custom component and into its instance

Question

I have a custom component that extends a Jtree
I want to know when a node is clicked both , into my component and after into the component sited into Jpanel
now, I can only detect it into the component, but I dont know how to detect it at the component I have in my Jpanel
I have 'addTreeSelectionListener' in both places ...
xxxxx.addTreeSelectionListener(new javax.swing.event.TreeSelectionListener() {
public void valueChanged(javax.swing.event.TreeSelectionEvent e) { .....
Any help ?
Thanks

Answer 1

tonnot wrote:
Thank you.
I think that a good answer can be ' Revise your code, because there must be a problem' Well, that's the life of a programmer. If you want to post an SSCCE, I'm sure somebody can help if you get stuck.
And ...
Why are you extending JTree? I'd bet you shouldn't be.Why not ? ....
Why SUN develop the 'extends' functionality ? You should use extends if you're changing the behavior of an existing class. An example of this is extending JPanel and overriding the paintComponent() method to do some custom painting.
You should not use extends if you just need an instance of an existing class. An example of this is extending JFrame instead of simply creating a JFrame instance.
Without seeing your code, I can't be sure you're misusing extends. But many people do.
Here's an example.
Bad:
public class MyProgram extends JFrame{
   public MyProgram(){
      setSize(200, 200);
      setVisible(true);
   public static void main(String [] args){
      new MyProgram();
}Better:
public class MyProgram{
   public MyProgram(){
      JFrame frame = new JFrame();
      frame.setSize(200, 200);
      frame.setVisible(true);
   public static void main(String [] args){
      new MyProgram();
}