Attached is the code to reproduce the problem. When the list has no data, the list is not shown on screen. When i create the list with some data then it shows up


public class ListTest {
    public static void main(String[] args) {
        JFrame fr = new JFrame("ListTest");
        final JList list = new JList();
        list.setModel(new DefaultListModel());
        list.setVisibleRowCount(1);
        list.setLayoutOrientation(JList.HORIZONTAL_WRAP);
        JButton b = new JButton("Add");
         fr.getContentPane().add(b);
         JScrollPane pane = new JScrollPane(
            JScrollPane.VERTICAL_SCROLLBAR_NEVER,JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
        pane.setViewportView(list);
        fr.getContentPane().add(pane,"South");
        fr.setSize(600,180);
        fr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        fr.setVisible(true);
    }
    
}
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