If an image is tampered with some additional content, how to remove that additional content from the image in Java?

I want to know if there is any solution for the following scenario:

I have an application which uploads the files, after scanning and transcoding them, onto a server. Suppose, an image file is being uploaded which has been tampered with some additional contents over it. Now, as the uploaded file is illegitimate, I want to remove the additional tampered contents and upload just the original part of this image file. Is it possible to do so in Java?

Thanks.

It's not possible to detect in the general case, but there are some heuristic methods available to determine whether an image has been edited. Try using the tools at http://imageedited.com/ to get an idea of what's possible.

Removing the edit is a much more difficult problem, which is probably impossible with current methods.