JList not showing up

Question

I'm overlooking something stupid and just need a different pair of eyes to see what I'm missing.
I've made a DefaultListModel and populated it.
I created a JList, passing the Model as a parameter.
I created a JScrollPane, passing my JList, and setting scroll bar options.
I added my scroll pane to my frame.
My frame is visible.
public class ListTest extends JFrame {
     public ListTest() {
        super("NewClass");
        SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI();     }});
     public void createAndShowGUI() {
        DefaultListModel modelScript = new DefaultListModel();
        modelScript.addElement("BLAH");
        JList listScript = new JList(modelScript);
        listScript.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
        listScript.setLayoutOrientation(JList.VERTICAL);
        JScrollPane panScript= new JScrollPane(listScript, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
                                                           JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
        add(panScript);
        setVisible(true);
     public static void main(String[] listArgs) {
        ListTest oListTest = new ListTest();
}Edited by: porpoisepower on Mar 5, 2010 9:20 AM

Answer 1

well pack() fixed my sample!
but not my actual code :(
So here's some of my non-sample code.
I can make out a bevel on the right side of the frame, as if the ListBox was 0 wide.
    private void createAndShowGUI() {
        JPanel panTree;
        JPanel panScript;
        boolSystemTheme  = true;  // I know this looks stupid.
        if (boolSystemTheme) {
            try {
                UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
            catch (Exception e) {
                System.err.println("Couldn't use system look and feel.");
        txtResults = new JTextArea(8,15);
        frameMain = new JFrame("DynaRhino - Development");
        panTree = new JPanel();
        panTree.setLayout(new BorderLayout());
        panTree.add(initTree(), BorderLayout.CENTER); // Not included code returns a JScrollPane with a tree control
        panTree.add(initToolBar(),BorderLayout.NORTH); // Not included code returns a JToolBar
        panScript = new JPanel();
        panScript.setLayout(new BorderLayout());
        panScript.add(initScriptQueue(),BorderLayout.CENTER);
        frameMain.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frameMain.setSize (450,700);
        frameMain.setLayout(new BorderLayout());
        frameMain.add(initResults(),BorderLayout.SOUTH);
        frameMain.add(panTree,BorderLayout.WEST);
        frameMain.add(panScript,BorderLayout.EAST);
        frameMain.setLocationRelativeTo(null);
        frameMain.setVisible(true);
    private JScrollPane initScriptQueue() {
        DefaultListModel modelScript = new DefaultListModel();
        modelScript.addElement("Ping Client");
        JList listScript = new JList(modelScript);
        listScript.setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
        listScript.setLayoutOrientation(JList.VERTICAL);
        JScrollPane panScript= new JScrollPane();
        panScript.add(listScript);
        return panScript;
    }Edited by: porpoisepower on Mar 5, 2010 10:35 AM
added comment regarding boolSystemTheme