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我有一个GUI看起来如下.

我想动态添加/删除面板.我ArrayList用来保持JPanel物体的痕迹.现在我可以动态添加面板,但是当我想删除面板时,我无法获取其属性,因此我无法将其删除.

这是我的代码:

public class Main implements ActionListener{
    private List <myPanel> mpList;
    private JPanel btnPanel;
    private JButton jbtAdd,jbtDelete;
    private JFrame jf;
    private JPanel jp;
    private JScrollPane js;
    private myPanel mp;
    private static int size=0;
    private int selectedId=-1;
    //private
    public Main(){
        mpList=new ArrayList<myPanel>();
        btnPanel=new JPanel();
        jbtAdd=new JButton("addJpanel");
        jbtDelete=new JButton("delJpanel");
        btnPanel.setLayout(new FlowLayout(FlowLayout.LEFT,1,1));
        btnPanel.add(jbtAdd);
        btnPanel.add(jbtDelete);
        jf=new JFrame("hello");
        jp=new JPanel();
        js=new JScrollPane(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);   
        //jp.setLayout(new FlowLayout(FlowLayout.LEFT,1,1));
        jf.setLayout(new BorderLayout(10,10));
        jp.setLayout(new GridLayout(0,1,1,1));
        jp.setPreferredSize(new Dimension(500, 82*6));
        for(int i=0;i<6;i++){
            myPanel mp=new myPanel();
            //mp.setSize(400, 82);
            //mp.setBounds(0,82*i,480,82); …