1 package observer; 2  3 import java.lang.reflect.Method; 4  5 import oracle.net.aso.c; 6  7 public class Test { 8  9     public static void main(String[] args) throws Exception {10         11         String str = "observer.Dad";12         Class cls = Class.forName(str);13         Object obj = cls.newInstance();14         Method[] methods = cls.getMethods();15         for(Method m:methods)16         {17             if(m.getName().equals("ActionToWakeup"))18             {19                 m.invoke(obj, new WakeupEvent(0, "", null));20             }21         }22     }23 }

1 package observer;2 3 public class Dad{4     @Override5     public void ActionToWakeup(WakeupEvent e) {6         System.out.println("儿子醒了，我要去喂奶了。。。");7     }8 }