Getting the coordinates of Javax.Swing.Tree items

To get coordinates of the selected item:

// JScript
var path = tree.getSelectionPath();
var bounds = tree.getPathBounds(path);
var x = bounds.getCenterX();
var y = bounds.getCenterY();

This gives you the coordinates of the item's center, relative to the tree object. To convert them to absolute screen coordinates, you can use:

var point = tree.WindowToScreen(x, y);

The solution for an arbitrary item (not the selected one) is similar, but you'll need to get the path object using one of the following:

tree.getPathForRow(index), where index is the item's row index in the tree (as if the tree was a plain list).

tree.getModel().getRoot().getChildAt(index1).getChildAt(index2).getPath()