Selection Of checkbox in the JTree

Question

Hi all,
I have a very small problem in JTree.
The JTree is with checkbox.When ever I select on the node the simultaneous chechbox is selected.
But some time with the same operation the checkbox is not selected.
Here,I attache the part of code which is responsible for my problem.
public void mouseClickedNodeSelectionListener(MouseEvent e)
        int x = e.getX();
        int y = e.getY();
        int row = tree.getRowForLocation(x, y);
        TreePath path = tree.getPathForRow(row);
        //TreePath path = tree.getSelectionPath();
        if (path != null) {
            if(/*e.getClickCount()==1 &&*/ ElmsConstants.isDoubleClicked)
                if(lastPath!=null)
                    tree.setSelectionPath(lastPath);
                return;
            lastPath = path;
            CheckNode node = (CheckNode) path.getLastPathComponent();
            int selectedId = 0;
            if(node.getElmsData()!=null)
                selectedId = (node.getElmsData().getId()).intValue();
            if(lastSelectedId==selectedId)
                boolean isSelected = !(node.isSelected());
                node.setSelected(isSelected);
                tree.updateUI();
                ((DefaultTreeModel) tree.getModel()).nodeChanged(node);
                if (row == 0) {
                    try{
                        tree.revalidate();
                        tree.repaint();
                    }catch(Exception eE)
                        System.out.println("Exception in Tree repaint");
            lastSelectedId=selectedId;
}Any Body Please help me.
Thank you,
Ananda

Answer 1

It's hard to say what's the problem when you post this little code.
But probably the problem is that you're listening for mouse click event.
This event only fires when you click the mouse without moving it.
If by mistake you move the mouse while you click it you will not get a mouse click event.
You can use the mousePressed or mouseReleased events instead.
Anyway I would implement this with a custom editor instead of listening to mouse events.
See example here: [http://www.java2s.com/Code/Java/Swing-JFC/CheckBoxNodeTreeSample.htm]