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CaseThirteen.java 814B

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  1. import java.lang.annotation.*;
  2. public class CaseThirteen {
  3. public static void main(String []argv) {
  4. CaseThirteen o = new CaseThirteen();
  5. o.a();
  6. o.b();
  7. o.c();
  8. o.d();
  9. o.e();
  10. }
  11. public void a() {}
  12. @Anno(value=Level.NONE,c=Color.RED) public void b() {}
  13. @Anno(value=Level.ONE) public void c() {}
  14. @Anno(value=Level.TWO,c=Color.GREEN) public void d() {}
  15. @Anno(value=Level.THREE,c=Color.BLUE) public void e() {}
  16. }
  17. enum Level { NONE, ONE, TWO, THREE; }
  18. enum Color { RED, GREEN, BLUE; }
  19. @Retention(RetentionPolicy.RUNTIME)
  20. @interface Anno { Level value(); Color c() default Color.GREEN; }
  21. aspect X {
  22. before(String l): execution(@Anno !@Anno(Level.NONE) * *(..)) && @annotation(Anno(l)) && @annotation(Anno(c)) {
  23. System.out.println(l+""+c);
  24. }
  25. }