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

Exactly this is where AOP helps. Aspects can be added/removed without changing code. If you are using Spring; create Aspect including JoinPoint, Advice listing the Classes and public methods that are to evaluate execution time. Add these beans to the Spring config. Else use AspectJ Container for non-spring application