Replace on java class files

[kaarthikeyapreyan]

There was a search for a string usring grep in binary mode on a class file, and a replace for a corresponding entity using sed. this change was not effective and the file did not respond. wat could be possible point of failure, is this a wise method to do or recompile the source file and put it back.

[shabinesh]

Tough i really don't understand the purpose, i guess replacing a string in the file is your need ,I think this can be a pointer

dd if=file.txt | hexdump -C | sed 's/pattern/r_str/g' | dd of=file.txt

did my assumption help you. and sorry if irrelavant