@Target({ElementType.FIFLD,ElementType.TYPE,ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME,RetentionPolicy.SOURCE,RetentionPolicy.CLASS)
Class c=Class.forName("me.fixyou.Child");
c.isAnnotationPresent(MyDescription.class);
MyDescritption c=c.getAnnotation(MyDescription.class)
dd.value();
