JPEG writer fails to send its output to FileCacheImageOutputStream

The JPEG writer fails to send its Output to the FileCacheImageOutputStream.
The FileCacheImageOutputStream denotes the FileOutputStream internally which in turn represents a file
The FileCacheImageOutputStream size increases after the write operation but the FileOutputStream size does not increase

Run the sample program attached a frame pops up with a load buton click the load button If two images are not loaded side by side or an exception is thrown then the bug is reproduced