How to secure java object code from Reverse Engineering

[Sree Reddy]

Hi All,
We are developing a pure java application. And we are distributing the object code over the Internet. How can i protect my code from being reverse compiled.
I mean after reverse compilation, they will get the source code, and then they can change it as they want.
How can i over come this one..
Thanks,
Sree

[Greg Charles]

Obfuscation is the quick answer. It doesn't really prevent your app from being decompiled, but it makes it much harder to understand when it is. If you are not worried about the IP aspect, but just concerned that a corrupted application might be passed off as your own, you can look into signed jars and certificates, but I don't have much experience with those.