Jlist最后只显示2个元素

Question

我想将列表播放器显示给Jlist，但它不会显示所有列表，最后只显示2个元素。 这是我的代码：

           //create List player

    listplayersource = new DefaultListModel();
    listplayersource.addElement("VIP player 1");        
    list_player = new JList(listplayersource);
    list_player.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    list_player.setLayoutOrientation(JList.VERTICAL);
    list_player.setVisibleRowCount(16);     
    panelmain.add(new JScrollPane(list_player), BorderLayout.WEST);

    listplayersource.addElement("Vip player 2");

    listplayersource.addElement("VIP player 2");
    listplayersource.addElement("VIP player 3");
    listplayersource.addElement("VIP player 4");
    listplayersource.addElement("VIP player 5");

结果：

      VIP player 4

      VIp player 5

它出了什么问题？