refresh view of Jpanel

hot to refresh the view of a jpanel.

I am adding some components to a jpanel and when i try to remove them using removeAll() and then if I add some other components it is just overwriting. It is not clearing the previous view.......

Plz help me ............

You have to call revalidate and repaint on the JPanel after changing JComponents. Better still would be to use a CardLayout manager to just swap JPanels.