FrameView窗口关闭消息无法截取

窗口关闭，程序退出时想做一点收尾动作，发现窗口关闭时不仅截获不了消息，甚至程序就没有真正退出，是不是FrameView本身就有缺陷啊，进程都无法正常关闭？求解释，求截获窗口关闭消息，求窗口关闭时应用如何正彻底退出。

package TimingApp;



import org.jdesktop.application.Application;

import org.jdesktop.application.SingleFrameApplication;



public class TimingApp extends SingleFrameApplication {

    @Override protected void startup() {

        doShutDownWork();

        show(new TimingView(this));

    }

    @Override protected void configureWindow(java.awt.Window root) {

    }

    public static TimingApp getApplication() {

        return Application.getInstance(TimingApp.class);

    }

  private void doShutDownWork() {

    Runtime.getRuntime().addShutdownHook(new Thread() {



      public void run() {

            System.out.println("Tell me where to stop");

      }

    });

  }

    public static void main(String[] args) {

        launch(TimingApp.class, args);

    }

}



package TimingApp;



import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import javax.swing.JFrame;

import org.jdesktop.application.FrameView;

import org.jdesktop.application.SingleFrameApplication;



/**

 *

 * @author Administrator

 */

public class TimingView extends FrameView {

    public TimingView(SingleFrameApplication app) {

        super(app);

        initComponents();

        JFrame mainFrame = TimingApp.getApplication().getMainFrame();

        mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        mainFrame.addWindowListener(new WindowAdapter(){

            @Override

            public void windowClosing(WindowEvent e){

                System.exit(0);

            }

        });



    }

 

    @SuppressWarnings("unchecked")

    private void initComponents() {

        mainPanel = new javax.swing.JPanel();

        jLabel1 = new javax.swing.JLabel();

        mainPanel.setName("mainPanel"); 

        org.jdesktop.application.ResourceMap resourceMap = org.jdesktop.application.Application.getInstance(TimingApp.class).getContext().getResourceMap(TimingView.class);

        jLabel1.setText(resourceMap.getString("jLabel1.text")); 

        jLabel1.setName("jLabel1"); 

        javax.swing.GroupLayout mainPanelLayout = new javax.swing.GroupLayout(mainPanel);

        mainPanel.setLayout(mainPanelLayout);

        mainPanelLayout.setHorizontalGroup(

            mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

            .addGroup(mainPanelLayout.createSequentialGroup()

                .addGap(168, 168, 168)

                .addComponent(jLabel1)

                .addContainerGap(190, Short.MAX_VALUE))

        );

        mainPanelLayout.setVerticalGroup(

            mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

            .addGroup(mainPanelLayout.createSequentialGroup()

                .addGap(125, 125, 125)

                .addComponent(jLabel1)

                .addContainerGap(160, Short.MAX_VALUE))

        );

 

        setComponent(mainPanel);

    }                       

 

    private javax.swing.JLabel jLabel1;

    private javax.swing.JPanel mainPanel;         

 

}

调试状态下应用窗口关闭后暂停，进程状态如下：