what is the performance impact on an unhandled switch-case enum ? - none
what is the performance impact on an unused variable ? - none
what is the performance impact on an unclosed connection ? - none closes when gets out of scope
Java developers know that Java is also written by retards, so internally 99% of your shit is cleaned up by them on compile or even JIT level. Warnings help keeping the source code clean on the project's prespective, and are just warnings and nowhere near to something that trully impacts and drives performance. (There are other tools that do that)
Now, @iTopZ you are totally irrelevant to me, I don't know who you are and by what means you hate me, but your just wasting your time going aggressive to me totally unprovoked because an irrelevant can't change my opinion or my feelings. Cheers