If your question is Can I ensure that no one can hack my code , the answer would be NO..
Whether it is in JAVA or Visual C++ .
As long as your software which is made up of byes or bits is directly accessible by the hacker.
The REASON is simple.
However you encoded , that can be decoded.
The best strategy could be to make a web service and deploy your secret logic there.
Let others use your service without having access to how you wrote.
