In release 1.6, it became legal to use the Override annotation on method declarations that override declarations from interfaces as well as classes. In a concrete class that is declared to implement an interface, you needn't annotate methods that you believe to override interface methods, because the compiler will emit an error message if your class fails to implement every interface method. Again, you may choose to include these annotations simply to draw attention to interface methods, but it isn't strictly necessary.
But you should because it has the possibility of letting you know if the interface changes to no longer define that method.
