JAVAメタデータの書き方

import java.lang.annotation.*;
@Target({ElementType.METHOD,ElementType.CONSTRUCTOR})//          
@Retention(RetentionPolicy.RUNTIME)//     
public @interface MyAnn {
	String name();//      
	int age();
	//Integer age2();     
}
public class TestAnn {
	@MyAnn(name="zhang",age=20)//      
	public	void test(String name,int age){
		System.out.print(name+""+age);
	}
	@SuppressWarnings("unchecked")
	public static void main(String[] args) throws Exception{
		Class c=TestAnn.class;
		Object obj =c.newInstance();
		Method [] m=c.getMethods();
		for(Method mm:m){
			if(mm.isAnnotationPresent(MyAnn.class)){//         
				MyAnn ma=mm.getAnnotation(MyAnn.class);//
				mm.invoke(obj, ma.name(),ma.age());
			}
		}

	}

}