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

[Pete Brunet]

Hi David, I didn't get any output at all from that one - though it
appears to be a valid parameter as it didn't result in an error
message.  -Pete

David Holmes wrote:
> 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
>>>>>