Key Listening without a textfield or similar

Ok, I want to let the program call a method when a key is pressed, but so for I have only been able to do this when i added a KeyListener to an object like a textfield.
You can imagine this is a little bit annoying. I want something that listens to my Keys without some field. A panel was quite hard to implement and then I read something about ProcessKeyEvent and if you want this to work you have to do SOMETHING with enableEvent(), but I have no idea what. Can anybody tell me plz or give me another solution to this problem.

I think JComponents can listen for KeyEvents (as a previous post explains, there should at least be some component available to listen for the events)
The code below works for my JTree based component.
tree.addKeyListener( new HierarchyTreeKeyListener(this) );Where the listener class looks like...
     class HierarchyTreeKeyListener extends KeyAdapter{
          HierarchyTree tree;
          public HierarchyTreeKeyListener(CTree treeIn){
               tree = treeIn;
          public void keyTyped(KeyEvent kt){
               //get a handle on the selected node. This will be the root for the search
               DefaultMutableTreeNode selectedNode = (DefaultMutableTreeNode) tree.getLastSelectedPathComponent();
               //System.out.println("selected node: "+selectedNode);
               char key = Character.toLowerCase(kt.getKeyChar());
               boolean found = false;
                    DefaultMutableTreeNode queryNode = (DefaultMutableTreeNode)tree.charSearch(key, selectedNode);
                    if( queryNode != null ){
                         expandPath( queryNode );
          }//end of method
     }//end of class HierarchyTreeKeyListener

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NUFCjavaworker wrote:
Cheers for the help however it has made another problem. The shorter version worked the best so that is what I used. I implemented it like this:
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NickErrors you say?

Key Listening without a textfield or similar

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