Canceling an asynchronous IO operation throws NPE

[Umashankar]

Hi Alan,
On canceling an IO operation that is in progress,I get a 
CancellationException which is expected as per the spec.
But in the stack trace, I also see a NullPointerException.
Following is the stack trace.
    java.util.concurrent.CancellationException
        at sun.nio.ch.PendingFuture.get(PendingFuture.java:136)
        at 
AsyncIOCancelTests.testWrite2FileChannel_01(AsyncIOCancelTests.java:50)
        at AsyncIOCancelTests.main(AsyncIOCancelTests.java:19)
Exception in thread "Thread-1" java.lang.NullPointerException
        at sun.nio.ch.PendingFuture$1.run(PendingFuture.java:206)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
        at java.lang.Thread.run(Thread.java:674)

Please let me know if this is correct.

Thanks,
Umashankar