FULL PRODUCT VERSION :
java 1.6.0 final

ADDITIONAL OS VERSION INFORMATION :
The problem can be reproduced in Windows 2000 and Windows XP. In linux it works fine.

A DESCRIPTION OF THE PROBLEM :
This is a strange thing that happens only using java 1.6.0 in windows 2000 and XP. In linux it works as expected. I haven't tried in Vista or Mac.

The problem is that a MouseListener added to a JTree doesn't get events everytime that a tree node is clicked. When the node is clicked the tree selection changes, but my listener sometimes is not notified.

It happens randomly, Probably I click 20 times and it works and then the next 2 fail. This problem can't be reproduced using 1.5.0.10 in the same operating systems.

An example of the code used is:


        DefaultMutableTreeNode allNode =
            new DefaultMutableTreeNode("All");
        
        DefaultTreeModel treeModel = new DefaultTreeModel(allNode);
        
        //Add basic nodes
        
        DefaultMutableTreeNode favoriteNode =
            new DefaultMutableTreeNode("Node 1");
        
        DefaultMutableTreeNode systemNode =
            new DefaultMutableTreeNode("Node 2");
        
        DefaultMutableTreeNode userNode =
            new DefaultMutableTreeNode("Node 3");
        
        allNode.add(systemNode);
        allNode.add(userNode);
        allNode.add(favoriteNode);
        
        final JTree categoryTree = new JTree(treeModel);
        categoryTree.setShowsRootHandles(true);
        categoryTree.getSelectionModel().setSelectionMode(
                TreeSelectionModel.SINGLE_TREE_SELECTION);
        DefaultTreeCellRenderer crenderer = new DefaultTreeCellRenderer();
        crenderer.setOpenIcon(null);
        crenderer.setClosedIcon(null);
        crenderer.setLeafIcon(null);
        
        categoryTree.setCellRenderer(crenderer);

        categoryTree.addMouseListener(new MouseListener(){
            
            public void mouseClicked(MouseEvent arg0) {
                System.out.println("Mouse clicked: "+categoryTree.getSelectionPath().toString());
            }

            public void mouseEntered(MouseEvent arg0) {}
            public void mouseExited(MouseEvent arg0) {}
            public void mousePressed(MouseEvent arg0) {}
            public void mouseReleased(MouseEvent arg0) {}
            
        });

In our application we have around 10 nodes that are childs of the three nodes described here under the root node, not 3 like in the example.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Using the code of the description in an applet, open the java console and just click several times in the tree nodes. The console should print a line everytime that a node is clicked, but sometimes it doesn't do it.

I repeat this happens randomly. Sometimes I click many times and it works and some others I click a couple that doesn't.

It only happens using 1.6.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The expected result is a MouseEvent in the mouseClicked method of the listener every that a node in the tree is clicked.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
No errors are thrown to the java console.

REPRODUCIBILITY :
This bug can be reproduced often.