Should I use javac -O option to optimize?

Question

javac has an interesting -O option:

Optimizes compiled code by inlining static, final and private methods. Note that your

Answer 1

I have been working with Java almost since its inception. I have built many systems, some of them high-performance, some of them extreme performance, and I have never, ever, found this flag useful. I think that it may have once had a use, but I have never needed to care.