No way would a microbenchmark ever change any responsible person's mind about tooling. There are a lot of reasons (some of them nearly respectable) to use Java; "it's faster than <X>" isn't one of them.
Don't be silly. Java is extensively used for speed. It is an extremely fast language with a few caveats (such as startup/warmup time).
Of course, I didn't mean to imply that any microbenchmark would change someone's mind. It's kind of absurd to think that's what I meant. Go should approach C/C++ in performance and often Java is promoted as about 2x slower than these two languages. Fast compilation and linking is another big plus. The formatting consistency is another. It's not a verbose language either.
Added java to the list. It's still faster then go.