import org.aspectj.testing.Tester; public aspect AdviceOnIntroduced { public static void main(String[] args) { test(); } public static void test() { Tester.checkEqual(new Foo(10).foo(5), 6, "foo"); } int Foo.foo(int n) { return n; } Foo.new(int w) { this(); } int around(int n): within(AdviceOnIntroduced) && (args(n) && execution(int foo(int))) { int result = proceed(n); return result+1; } before(): within(Foo) && execution(new(..)) { //System.out.println("before new"); } } class Foo { }