Java profiling - how can I get a method by method analysis of my application?

Question

I want to run my Java app and for a given workload be able to see:

• how many times a given function was called
• how expensive each function call is in

Answer 1

Java 1.7* comes bundled with Java Mission Control (jmc), which has 'Flight Recorder' feature which can be used to profile the method execution. Profiling results are displayed almost similar to AppDynamics - easy to spot the perf issues (esp. which methods are eating up all the CPU).

Though not detailed, but good blog post explaining the about Flight Recorder: http://hirt.se/blog/?p=364

* Not sure about the minor version