An attempt to use an ImageReadParam with the JPEG reader fails in native code.
For example, running the ImageReadParamTest program from the Image I/O EA
workspace and manipulating the X Offset slider yields the error:

javax.imageio.IIOException: Improper call to JPEG library in state 200
at com.sun.imageio.plugins.jpeg.JPEGImageReader.readImage(Native Method)
at com.sun.imageio.plugins.jpeg.JPEGImageReader.read(JPEGImageReader.java:651)
at ReadThread.run(ImageReadParamTest.java:256)