Informations about Annotation

[Ivan paterno]

Hi all, I'm Ivan and I'm new in the community. I'm trying to add 
something new in the field of annotations but the main repository of 
Java 9 has too many file and I don't know where i need to start to 
looking for.

First of all, where can i find the files where is specified where the 
annotations can be placed? Es. i can only write an annotation on class 
or method declaration but if i want to add something different, where i 
must to looking for?


Thanks

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Ivan Paterno
ivan.paterno at studenti.unimi.it