Dynamically change nested Swing component

Here is my problem: I have a JPanel that contains a JTabbedPane which has a JScrollPane using a customized JPanel开发者_如何学编程. Quite simply, I change customized JPanel a ways into my program, and I need all of the parent components to reflect the change. However, I have no idea what I need to use in order to accomplish this. This is what I have now:

    infoScroller.remove(infoPanel);
    this.reevaluateInfoPanel();
    infoScroller.setViewportView(infoPanel);
    infoScroller.revalidate();
    infoScroller.repaint();

where infoScoller is the JScrollPane and infoPanel is the customized JPanel.

It should go from saying | Hi! | (or something like that, you get the idea) to saying | Bye! | but instead it goes from | Hi! | to | |

EDIT: By customized all I mean is that it extends JPanel, and has some components, etc. reevaluateInfoPane() sets the infoPanel equal to a new infoPanel based upon new information. I know that the reevalutateInfoPanel() does what I want, as I can put it is a new JFrame and it is correct... here is the code anyway... this will probably confuse more than help, as it is really not necessary...

private void reevaluateInfoPanel(){
    infoPanel = new JPanel();
    GridLayout gl = new GridLayout(infoNum, 1);
    infoPanel.setLayout(gl);

    //Create a display panel for every info block available
    DisplayPanel[] panels = new InfoViewer[infoList.length];
    for(int i = 0; i < panels.length; i++){
        panels[i] = new InfoViewer(infoList[i]);
    }

    //Assign a new SelectionPanel for every info selection necessary
    for(int i = 0; i < infoNum; i++){
        infoPanel.add(new SelectionPanel(panels, "info"));
    }
}

UPDATE: I have figured out that the problem lies somewhere with the JTabbedPane, which is not rendering the updated JScrollPane. Instead, it just removes it altogether when I revalidate and repaint it (the JTabbedPane).

You should call revalidate() and repaint() on the container you changed. From the description, it sounds like you should call them on infoPanel. Also, make sure your calls happen on the Event Dispatch Thread.

Perhaps it would be helpful to also see how you change the content of infoPanel.

As already was suggested, calling revalidate() and repaint() on the parent component will be enough. It automatically propagates revalidation and repainting to all components inside that component.