import java.lang.annotation.*; @Retention(RetentionPolicy.RUNTIME) @interface Colored { String color(); } public class CallAnnBinding3 { public static void main(String[]argv) { SecondaryClass sc = new SecondaryClass(); // tackle the primitives ... sc.m1(1); // int sc.m2(true); // boolean sc.m3(new Byte("3").byteValue());// byte sc.m4('a'); // char sc.m5(new Long(444L).longValue()); // long sc.m6(new Double(3.3).doubleValue()); // double sc.m7(new Float(2.2).floatValue()); // float sc.m8(new Short("2").shortValue()); // short // how about darn arrays sc.m9(new int[]{1,2,3},new String[]{"a","b"}); // and the ultimate ... double depth dastardly arrays String a[][] = new String[5][]; a[0]= new String[3]; sc.m10(a); } } class SecondaryClass { @Colored(color="red") public void m1(int i) { } @Colored(color="orange") public void m2(boolean b) {} @Colored(color="yellow") public void m3(byte b) { } @Colored(color="green") public void m4(char c) { } @Colored(color="blue") public void m5(long l) { } @Colored(color="indigo") public void m6(double d) { } @Colored(color="violet") public void m7(float f) { } @Colored(color="black") public void m8(short s) { } @Colored(color="taupe") public void m9(int[] x,String[] ss) {} @Colored(color="beige") public void m10(String[][] s) {} } aspect X { int i = 0; before(Colored c): call(* SecondaryClass.*(..)) && !within(X) && @annotation(c) { i++; if (i==1) checkColor(1,c,"red"); if (i==2) checkColor(2,c,"orange"); if (i==3) checkColor(3,c,"yellow"); if (i==4) checkColor(4,c,"green"); if (i==5) checkColor(5,c,"blue"); if (i==6) checkColor(6,c,"indigo"); if (i==7) checkColor(6,c,"violet"); if (i==8) checkColor(6,c,"black"); if (i==9) checkColor(6,c,"taupe"); if (i==10) checkColor(6,c,"beige"); if (i==11) throw new RuntimeException("Advice running more times than expected"); System.err.println(c.color()); } public void checkColor(int run, Colored c,String exp) { if (!c.color().equals(exp)) throw new RuntimeException("Advice execution #"+run+" expected "+exp+" but got "+c.color()); } }