// Create a read-only combobox
    String[] items = {"item1", "item2", "item3"};
    JComboBox cb = new JComboBox(items);
    
    // Get number of items
    int num = cb.getItemCount();
    
    // Get items
    for (int i=0; i<num; i++) {
        Object item = cb.getItemAt(i);
    }
    // [item1, item2, item3]