Double-click a JTree node and get its name

actionlistener, java, jtree

Solution

From the Java Docs

If you are interested in detecting either double-click events or when a user clicks on a node, regardless of whether or not it was selected, we recommend you do the following:

final JTree tree = ...;

MouseListener ml = new MouseAdapter() {
    public void mousePressed(MouseEvent e) {
        int selRow = tree.getRowForLocation(e.getX(), e.getY());
        TreePath selPath = tree.getPathForLocation(e.getX(), e.getY());
        if(selRow != -1) {
            if(e.getClickCount() == 1) {
                mySingleClick(selRow, selPath);
            }
            else if(e.getClickCount() == 2) {
                myDoubleClick(selRow, selPath);
            }
        }
    }
};
tree.addMouseListener(ml);

To get the nodes from the `TreePath` you can walk the path or simply, in your case, use `TreePath#getLastPathComponent`.

This returns an `Object`, so you will need to cast back to the required node type yourself.

Problem

Original source