Java Annotations Processor: Check if TypeMirror implements specific interface

Question

I\'m working with on a Java annotations processor. My annotation, @foo is used to mark field variables that can be read to a file or from a file during runtime. How

Answer 1

Instead of checking the direct supertypes, you should use Types.isAssignable to check if Serializable is one of the supertypes of the TypeMirror:

TypeMirror serializable = elementUtil.getTypeElement("java.io.Serializable").asType();
boolean isSerializable = typeUtil.isAssignable(tm, serializable);