passStarted() and passCompleted() methods of IIOReadUpdateListener are not
getting notified for JPEG image when a progressively encoded image is read.
Only the imageUpdate() method is getting invoked. This is noticed on all the platforms.
This works fine for PNG. I have tested this with images which are progressively
encoded using a native application. I have enclosed the sample code which
reproduces this failure.

How to run the sample code :
Compile the .java file and run the sample code using appletviewer.
If you get messages in the command window saying that the above methods are
 invoked then the testcase passes. If you don't get the message for any of the
 above methods(except imageUpdate) then the bug is reproduced.