How to get the parent Frame of a component ?

Hi,
I'm wondering how to get the parent JFrame (or JDialog) of a component.
Thanks for tips

I'm using this code:
public Component getFrame(Component comp)
    Component frame = comp;
    while ((frame != null) && !(frame instanceof Frame))
        frame = frame.getParent();
    if (frame == null)
        frame = comp;  // no parent found
    return frame;
}

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