How to avoid jar,class file hacking

[huwijk]

It is easy to get source code from a class file or jar file
how to avoid this to implement high security

[KevinWorkman]

Question 1: Are you really sure you need this?
Question 2: Are you sure you're sure?

[Tolls]

Don't get paranoid?

[huwijk]

sure

[Tolls]

If someone really wants your code they'll get it.
Short of turning it into an exe (which is itself not protection) there's not a great deal you can do.
If the customer has the jar file they have your code.

[arielb]

really necessary since it would obscure the option.
Obfuscation - Wikipedia, the free encyclopedia
ProGuard

[Tolls]

From the ProGuard link:
"harder to reverse-engineer"
Note the "harder".
Since people successfully reverse engineer exe code, obfuscated Java code is not really going to be a challenge.
It can, after all, only go so far due to the needs of the JVM.

[KevinWorkman]

Guess he didn't like these answers. Crossposted: HOW TO AVOID JAR,CLASS FILE HACKING

[DarrylBurke]

Thanks for the heads-up, Kevin

db

[JeffThomas]

If you don't want people to easily be able to decompile and obtain snippets of your source code you should probably make use of another programming language such as c++ . Compile your program into an executable then pack it, encrypt it, and obfuscate it by utilizing several other third party programs.

[Tolls]

And it still won't be unhackable...

I doubt there's any software out there that's worth that effort.