I haven't done Java fulltime in almost 15 years, but I still haven't seen anything out there that is as good as JMX was, out of the box. For just getting decent

I haven't done Java fulltime in almost 15 years, but I still haven't seen anything out there that is as good as JMX was, out of the box. For just getting decent metrics / observability without rolling in frameworks. Just part of the runtime.