Java action for adding 2 numbers

Hello Folks,   I am facing an issue with java action, I  am not able to do any action or code changes it giving me error of unreachable code. can you please help me, thanks in advance.
1 answers

Remove the line above your line that says "throw new [...]", that should fix the issue.

That line basically just says "hey, nothing is implemented" and then it stops the java action, so it will never reach any code underneath.