I would like a program that logs every call I made to a class folder like com.mycompany.mylibrary and outputs a valid java program, much like http://linux.die.net/man/1/ltrace does in Linux.
Do you guys know any call interceptor like the one I am looking for?
I guess you want to use some aspect-oriented mechanism like AspectJ. Although I'm confused by what you mean by 'outputs a valid Java program'
I do not really need a valid Java program just as ltrace outputs an almost valid C program if it not where for the return values. In fact I just need the tracing.
I have found: http://www.jroller.com/carlossg/entry/tracing_an_application_using_aspectj but I will have to recompile the jars I need to trace since AspectJ poincuts are injected at compile time. So I am still looking for a solution that does not need any recompilation just like ltrace works for C.