Java 如何访问以序列化方式创建的对象?

Java 如何访问以序列化方式创建的对象?,java,actionlistener,createobject,Java,Actionlistener,Createobject,这是我的代码:在这里,我单击鼠标右键,选择test1。代码创建一个JLabel并将其放置在该位置 public class Test extends JFrame { int x; int y; JPopupMenu menu = new JPopupMenu("Popup"); class MyLabel extends JLabel { public MyLabel(String text) {

这是我的代码:在这里,我单击鼠标右键,选择test1。代码创建一个JLabel并将其放置在该位置

    public class Test extends JFrame {
       int x;
       int y;
       JPopupMenu menu = new JPopupMenu("Popup");

       class MyLabel extends JLabel {
          public MyLabel(String text) {
          super(text);
          addMouseListener(new PopupTriggerListener());
       }

class PopupTriggerListener extends MouseAdapter {
  public void mousePressed(MouseEvent ev) {
    if (ev.isPopupTrigger()) {
      menu.show(ev.getComponent(), ev.getX(), ev.getY());
      x = ev.getX();
      y = ev.getY();
    }
  }

  public void mouseReleased(MouseEvent ev) {
    if (ev.isPopupTrigger()) {
      menu.show(ev.getComponent(), ev.getX(), ev.getY());
      x = ev.getX();
      y = ev.getY();
    }
  }

          public void mouseClicked(MouseEvent ev) {
          }
        }
      }

  JLabel label = new MyLabel("right-click");

    public Test() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JMenuItem item = new JMenuItem("Test1");
        item.addActionListener(new ActionListener() {
          public void actionPerformed(ActionEvent e) {

            System.out.println("Menu item Test1");
            JLabel newLabel = new JLabel("test");
            label.add(newLabel);
            newLabel.setBounds(x, y, 40, 10);
                  }
                });
        menu.add(item);

        item = new JMenuItem("Test2");
        item.addActionListener(new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            System.out.println("Menu item Test2");
          }
        });
        menu.add(item);

        getContentPane().add(label);
        pack();
        setSize(300, 100);
      }

      public static void main(String[] args) {
        new Test().setVisible(true);
      }

但我不知道之后,我如何才能访问这些标签(例如修改它们的文本)。如果用户用右键单击标签并选择“删除”,我还想删除创建的标签,但在actionPerformed代码中,netbeans不允许我添加另一个actionListener。。有人能帮我吗?谢谢

所有更改都在
测试
构造函数中:

public Test() {
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    // Change the name here from "Test1" to whatever you want
    JMenuItem item = new JMenuItem("Test1");
    item.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            System.out.println("Menu item Test1");
            JLabel newLabel = new JLabel("test");
            label.add(newLabel);
            newLabel.setBounds(x, y, 40, 10);
        }
    });
    menu.add(item);

    // Change the name here from "Test2" to whatever you want
    item = new JMenuItem("Test2");
    item.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            System.out.println("Menu item Test2");
        }
    });
    menu.add(item);

    // Implement a "Delete" option
    item = new JMenuItem("Delete");
    item.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            System.out.println("Menu item Delete");
            // Get the component at the mouse coordinates
            Component comp = label.getComponentAt(x, y);
            // If the component is a JLabel, delete it
            if (comp instanceof JLabel) {
                label.remove(comp);
                // Repaint the screen to remove the label
                repaint();
            }
        }
    });
    menu.add(item);

    getContentPane().add(label);
    pack();
    setSize(300, 100);
}

好的,很好!!但是为了我的目的,我必须制作一份菜单,在这段时间内可以改变。。是否有可能在每次单击右键时创建一个菜单?我在努力,但没用。。。你能帮助我吗?谢谢,每次点击右键都可以更改菜单,但是您想在菜单中更改什么?