title: use Java to convert ANY file to hex and back again
body: <p>I have some files i would like to convert to hex, alter, and then reverse again, but i have a problem trying to  do jars, zips, and rars. It seems to only work on files containing normally readable text. I have looked all around but cant find anything that would allow jars or bats to do this correctly. Does anyone have an answer that does both? converts to hex then back again, not just to hex?</p>