import java.lang.annotation.*; @Retention(RetentionPolicy.RUNTIME) @Inherited @interface Colored { String color(); } public class AtThis4 { public static void main(String[]argv) { new A().start(); new B().start(); new C().start(); X.verify(); } } @Colored(color="yellow") class A { public void start() { m();} // Can't match @this() on calls from static method, // hence this start() method... public void m() { System.err.println("method"); } } class B extends A { } // inherits yellow color :) @Colored(color="blue") class C extends B { } aspect X { static int count = 0; before(Colored c): call(* m(..)) && !within(X) && @this(c) { System.err.println(c.color() + thisJoinPoint); count++; if (count == 1 && !c.color().equals("yellow")) throw new RuntimeException("First advice execution, color should be yellow"); if (count == 2 && !c.color().equals("yellow")) throw new RuntimeException("Second advice execution, color should be yellow"); if (count == 3 && !c.color().equals("blue")) throw new RuntimeException("Third advice execution, color should be blue"); } public static void verify() { if (count!=3) throw new Error("Should be 3 runs: "+count); } }