Replace panel on actionPerformed

Question

I thought it could be this simple, but I must be missing something. When my frame displays, mainPanel displays at first. Once a user selects on of my menu options, I need to remove one panel from the frame and add one. I figured this code was good enough, but it isn't working right. It's removing the mainPanel, but it isn't adding the rosterPanel1.
    private void sort1RosterActionPerformed (java.awt.event.ActionEvent evt)                                           
        getContentPane ().remove (mainPanel);
        getContentPane ().add (rosterPanel1);
        pack ();
    }

Answer 1

In the future, Swing related questions should be posted in the Swing forum.
Generally you would use revalidate() and sometimes repaint() after adding or removing components from a visible panel. When using the contentPane you need to cast it to a JPanel first, since revalidate() is a JComponent method.
In the past I've notice problem updating the content pane directly. A simple solution is to use a [url http://java.sun.com/docs/books/tutorial/uiswing/layout/card.html]Card Layout