import java.lang.annotation.*; public class CaseThirteen { public static void main(String []argv) { CaseThirteen o = new CaseThirteen(); o.a(); o.b(); o.c(); o.d(); o.e(); } public void a() {} @Anno(value=Level.NONE,c=Color.RED) public void b() {} @Anno(value=Level.ONE) public void c() {} @Anno(value=Level.TWO,c=Color.GREEN) public void d() {} @Anno(value=Level.THREE,c=Color.BLUE) public void e() {} } enum Level { NONE, ONE, TWO, THREE; } enum Color { RED, GREEN, BLUE; } @Retention(RetentionPolicy.RUNTIME) @interface Anno { Level value(); Color c() default Color.GREEN; } aspect X { before(String l): execution(@Anno !@Anno(Level.NONE) * *(..)) && @annotation(Anno(l)) && @annotation(Anno(c)) { System.out.println(l+""+c); } }