Can annotations be used for code injection?

Question

I realise that this might be a question that has been asked and answered, but please bear with me.

I want to know if it is possible to use annotations to inject code int

Answer 1

It is not supported to modify code at compile time but it seems to be possible by using non-supported javac-internal APIs, here is a post referencing the hanbuy-panno solution with also a link to the code...