The JPEG writer does not write the Image Progressively

The JPEG and PNG writer returns the value true for the method canWriteProgressive() while the JPEG writer does not write the Image progressively

The JPEG Images will be rendered at a stretch while the PNG Image will be rendered step by step with the Image getting clearer in each pass

To reproduce the bugs run The sample program .It will popup a frame with button progressive .click the button The Images are loaded. If the PNG Image gets clearer in each pass and the JPEG image is loaded at a stretch The bug is reproduced