Center JDialog over parent

Question

I have a Java swing application with a button that produces a popup window when a certain action is performed. I\'d like to align the center point of the popup window with

Answer 1

You can utilize event e to get parent window. Use getWindowAncestor and e.getSource().

dialog.setLocationRelativeTo(SwingUtilities.getWindowAncestor((Component) e.getSource()))