BigObjectThatShouldNotBeSerializedWithAButton bigOne;是什么意思阿？java高手请帮我回答

Question

    import java.awt.*;
    import java.awt.event.*;
    import java.io.Serializable;    class MyApp java.io.Serializable
    {
         BigObjectThatShouldNotBeSerializedWithAButton bigOne;
         Button aButton = new Button();         class MyActionListener implements ActionListener
         {
             public void actionPerformed(ActionEvent e)
             {
                 System.out.println("Hello There");
             }
         }
 
         MyApp()
         {
             aButton.addActionListener(new MyActionListener());
         }
    }
代码中的BigObjectThatShouldNotBeSerializedWithAButton bigOne;是什么意思？