System.nanoTime¶

The naive way is to profling your JVM application using System.nanoTime (which gets the system time in nanosecond resolution).

VisualVM¶

VisualVM is a great tool for performance profiling of JVM applications.

JMH¶

JMH is a micro benchmark tool for Java.

https://www.baeldung.com/java-microbenchmark-harness

https://mp.weixin.qq.com/s/KSsYA3woNdFje_Y9fcjedQ