> Java file? Ohh, that's big. I'll gzip it
Please tell me they didn't gzip a .jar file? Those are already zip files, compressed with deflate!
(You may get a little more compression out of them because zip compresses files one at a time, but rarely an interesting amount.)
> Log file? Ohh, that's big. I'll gzip it. Log rotation breaks.
Log rotation should already have been gzipping yesterday's rotated copy. ;)