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  1. JDK
  2. JDK-8042114

Try remove system tray icon in shutdown hook will prevent VM terminate

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P3
    • Resolution: Not an Issue
    • Affects Version/s: 7u3, 8, 9
    • Fix Version/s: 9
    • Component/s: client-libs
    • Labels:

      Description

      FULL PRODUCT VERSION :
      java version " 1.7.0_03 "
      Java(TM) SE Runtime Environment (build 1.7.0_03-b05)
      Java HotSpot(TM) 64-Bit Server VM (build 22.1-b02, mixed mode)

      ADDITIONAL OS VERSION INFORMATION :
      Microsoft Windows [Version 6.1.7601]

      A DESCRIPTION OF THE PROBLEM :
      Try to remove a tray icon in system tray in a shutdown hook will prevent the vm terminate. The application will hang on the shutdown hook thread.

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      You may need to prepare an png file 'icon.png' under D:Run code below and right click the system tray icon -> Exit.


      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      The tray icon removed and java vm terminated
      ACTUAL -
      tray icon removed but vm will never exit

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------

      import java.awt.*;
      import java.awt.event.*;
      import java.io.*;

      import javax.imageio.*;

      public class NewClass {

          public static void main(String... args) throws IOException, AWTException {
              final TrayIcon yourTrayIcon = new TrayIcon(ImageIO.read(new File( " D:\\icon.png " )), " Icon " );
              SystemTray.getSystemTray().add(yourTrayIcon);
              final PopupMenu popup = new PopupMenu();
              MenuItem exitItem = new MenuItem( " Exit " );
              popup.add(exitItem);
              exitItem.addActionListener(new ActionListener() {

                  public void actionPerformed(ActionEvent e) {
                      System.exit(0);
                  }
              });
              yourTrayIcon.setPopupMenu(popup);
              Runtime.getRuntime().addShutdownHook(new Thread() {

                  public void run() {
                      try {
                          if (SystemTray.isSupported()) {
                              SystemTray systemTray = SystemTray.getSystemTray();
                              systemTray.remove(yourTrayIcon);
                          }
                      } catch (Exception e) {
                          e.printStackTrace();
                      }
                  }
              });
          }
      }
      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      remove the tray icon before call System.exit(0) don't have such problem/avoid remove trayicon in shutdown hook

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            Assignee:
            ssadetsky Semyon Sadetsky (Inactive)
            Reporter:
            webbuggrp Webbug Group
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              Dates

              Created:
              Updated:
              Resolved: