Whenever I update my class files on Filezilla, the changes I make don't show up, only the first version that I uploaded appears. I've tried re-uploading  and overwriting the files multiple times (including web.xml), even deleting them from the directory and re-uploading doesn't seem to work. Has anyone else encountered a problem like this? Any help is appreciated.

I am going through the same problem. I dont know what to do . I tried after 15-20 mins as well but still the changes dont reflect.