public class Activity {

     public void deal(String name, long id) {

         System.out.println(name + id + "进来了！");

     }

     public static void main(String[] args) throws NoSuchMethodException, SecurityException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {

         long id = 1001L;

         String name = "张三";

         Activity activity = new Activity();

         Method method = activity.getClass().getMethod("deal", String.class, long.class);

         method.invoke(activity, name, id);

     }

 }