NoClassDefFoundError: com/sun/java/accessibility/util/SwingEventMonitor

[David Holmes]

Peter,

Try adding -XX:+Verbose to get extra info

David

Pete Brunet said the following on 08/03/10 02:57:
> Thanks David, Those options tell me which classes were succesfully
> loaded but not what classes the class loader was trying to load when the
> class loader was attempting to load SwingEventMonitor.  Is there a way
> to get a deeper dump while a particular class is being loaded?  -Pete
> 
> David Holmes wrote:
>> Try -verbose:class or -XX:+TraceClassLoading
>>
>> HTH
>>
>> David Holmes
>>
>> Pete Brunet said the following on 07/31/10 07:53:
>>> This blog post has been helpful to at least start the investigation:
>>> http://www.jroller.com/sjivan/entry/difference_between_classnotfoundexception_and_noclassdeffounderror
>>>
>>>
>>> However, I haven't found anything yet similar to the cases discussed in
>>> the blog entry.  Since SwingEventMonitor was last updated for 1.4 I do
>>> see the use of Class and ListModel instead of Class<T> and ListModel<T>
>>> but it seems like this would not cause a NoClassDefFoundError.
>>>
>>> Other than visual inspection (which I've done) is there a technique for
>>> determining what classes the class loader is attempting to load as
>>> SwingEventMonitor is being loaded?
>>>
>>> Thanks, Pete
>>>
>>> Pete Brunet wrote:
>>>> What is the correct way to fix this?
>>>>
>>>> Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError:
>>>> com/sun/java/accessibility/util/SwingEventMonitor
>>>>         at
>>>> sun.awt.windows.accessibility.AccessibleContextMirror.<init>(AccessibleContextMirror.java:583)
>>>>
>>>>
>>>> This class lives in jaccess-1_4.jar which I copy to lib\ext and is
>>>> documented here:
>>>> http://download.oracle.com/docs/cd/E17802_01/j2se/javase/technologies/accessibility/docs/jaccess-1.3/doc/api/com/sun/java/accessibility/util/package-summary.html
>>>>
>>>>
>>>> Since (as far as I know) this class isn't part of the OpenJDK I
>>>> expected
>>>> javac to fail but it didn't (at least as far as the log shows):
>>>>
>>>> ...
>>>> # Java sources to be compiled: (listed in file
>>>> c:/OPF6CE~1/jdk7/build/WINDOW~2/tmp/sun/sun.awt/awt/.classes.list)
>>>> ../../../src/windows/classes/sun/awt/windows/Accessibility/AccessibleContextMirror.java
>>>>
>>>> # Running javac:
>>>> c:/OPF6CE~1/jdk7/build/WINDOW~2/J2SDK-~1/bin/javac
>>>> -J-XX:ThreadStackSize=768 -J-XX:-PrintVMOptions
>>>> -J-XX:+UnlockDiagnosticVMOptions -J-XX:-LogVMOutput -J-client
>>>> -J-Xmx395m
>>>> -J-Xms128m -J-XX:PermSize=32m -J-XX:MaxPermSize=160m -source 7
>>>> -target 7
>>>> -encoding ascii -Xbootclasspath:c:/OPF6CE~1/jdk7/build/WINDOW~2/classes
>>>> -sourcepath
>>>> c:/OPF6CE~1/jdk7/build/WINDOW~2/gensrc;../../../src/windows/classes;../../../src/share/classes
>>>>
>>>> -d c:/OPF6CE~1/jdk7/build/WINDOW~2/classes
>>>> @c:/OPF6CE~1/jdk7/build/WINDOW~2/tmp/sun/sun.awt/awt/.classes.list.filtered
>>>>
>>>> /usr/bin/mkdir -p
>>>> c:/OPF6CE~1/jdk7/build/WINDOW~2/tmp/sun/sun.awt/awt/obj
>>>> ...
>>>>
>>>> The source for SwingEventMonitor isn't in any of the three directories
>>>> in the -sourcepath.
>>>>
>>>> What files should I provide and where should I put them, both for
>>>> compile time and run time?
>>>>
>>>> Thanks, Pete
>>>>