Question

I want to trace all invocations of methods from a Foo class. Another class that would override all the methods from Foo like this…

@Override
public void blah() {
    System.out.println("blah()");
    super.blah();
}

…would do – but do I really need to override them all (over 100 methods)?

Can this be done in some smarter way, e.g., using reflection?

EDIT: To clarify – Foo is a JNI interface to a native library, and I need this to save all the calls to a file, to generate C code that does exactly what I did from Java.

Answer 1

First, if you have 100 methods in a class it is a prime candidate for refactoring.

Then – you can make a proxy (using CGLIB or javassist) around the object, and whenever a method is invoked, report the invocation.