Yes I do want one.  I have a tiny app launched from an applet that has
a login widget in BorderLayout.NORTH, when the user has logged on they
won't need the widget again so I want to slide it out to give feedback
that it has intentionally been removed.

I've tried gradually reducing preferred height and validating &
repainting but it does nothing till he eventual removal:

public void remove(JComponent cont) {
        Dimension dim = getPreferredSize();
        while (dim.height > 0) {
            try {Thread.sleep(100);}catch(Exception ex) {}
            --dim.height;
            setPreferredSize(dim);
            cont.validate();
            cont.repaint();
            System.out.println(dim.height + " : " + getPreferredSize());
        }
        cont.remove(this);
    }

Any tips?

TIA,
Mike W