How to use custom type annotations in Java

Question

Java 8 has feature called Type annotations (JSR 308). I would like to use it for simple Object to Object mapper framework. I would like define annotation @ExpectedType like this

Answer 1

I think you're mixing up the use of annotations at run time versus the use of same at "compile" time by various tools. Processor interface is for use in tools (compiler, javadoc generator), not in your runtime code.