Do you have a good way to see how your Java application is doing? Or are you just about to implement an application specific system monitoring interface?
You will find that good old JMX in combination with Jolokia and hawt.io offers well defined solutions to these problems. This works particularly well in todays world of elastically scaled microservices, where traditional JVM monitoring tools may not be available.
You get great insight into any Java VM out of the box, and in addition excellent support and visualisations of many common Java technologies.
If you know the power of these tools already, you will also benefit from some significant new features, as well as in depth coverage, such as application specific plugins and monitoring.