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  1. JDK
  2. JDK-6882923

Applet JARs in cache_archive cannot be accessed if the applet cache is empty

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Cannot Reproduce
    • Affects Version/s: 6u16
    • Fix Version/s: None
    • Component/s: deploy
    • Labels:
    • Subcomponent:
    • CPU:
      x86
    • OS:
      windows_xp

      Description

      FULL PRODUCT VERSION :
      JRE-Version 1.6.0_16-b01

      ADDITIONAL OS VERSION INFORMATION :
      Windows XP Service Pack 3

      A DESCRIPTION OF THE PROBLEM :
      This bugreport is related to the report with the internal review ID 1599797.

      If the applet cache is empty and applet jars (in the cache_archive attribute) are loaded for the first time, the classes in the jar files cannot be accessed which leads to NoClassDefFound-Errors. If you restart the browser, everything works fine.

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Steps 1-4 are necessary to work around the bug with the internal review ID 1599797.

      1. enable and clear the applet cache, activate the next-generation plugin
      2. restart your browser
      3. go to https://www.elsteronline.de/eportal/ , select "Software-Zert." and click "Login"
      4. restart your browser
      5. go to https://www.elsteronline.de/eportal/eop/auth/RegistrierungSoft-PSE.tax and click on the link "Schritt 2...."

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      The plugin loads and displays the applet without any errors.
      ACTUAL -
      The applet cannot be loaded tue to a ClassNotFoundException. The missing class is in applethelper.jar which is referred by the cache_archive attribute in the HTML-applet-tag

      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      java.lang.NoClassDefFoundError: de/elster/portal/applet/ZoomApplet
      at java.lang.ClassLoader.defineClass1(Native Method)
      at java.lang.ClassLoader.defineClass(Unknown Source)
      at java.security.SecureClassLoader.defineClass(Unknown Source)
      at java.net.URLClassLoader.defineClass(Unknown Source)
      at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      at java.lang.reflect.Method.invoke(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.defineClassHelper(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.access$400(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
      at java.security.AccessController.doPrivileged(Native Method)
      at sun.plugin2.applet.Plugin2ClassLoader.findClassHelper(Unknown Source)
      at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
      at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
      at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
      at java.lang.Thread.run(Unknown Source)
      Caused by: java.lang.ClassNotFoundException: de.elster.portal.applet.ZoomApplet
      at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at java.lang.ClassLoader.loadClassInternal(Unknown Source)

      REPRODUCIBILITY :
      This bug can be reproduced always.

      CUSTOMER SUBMITTED WORKAROUND :
      Restarting the browser works. The problem only occurs when a jar file is loaded the first time.

      The other known workaround is to disable the next-generation plugin and switch back to the classic plugin.

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              Assignee:
              dcherepanov Dmitry Cherepanov
              Reporter:
              ndcosta Nelson Dcosta (Inactive)
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