metadatashow.java

java 的好东西,,开发的基本语言语法教程

import java.lang.annotation.Annotation;

public class MetadataShow {
	@BookAuthor(name="曹雪芹",email="[e-mail]")  
    public void introHongLouMeng() { 
        System.out.println("这是一本好书啊"); 
    }
	public static void main(String[] args) {
        MetadataShow metadata = new MetadataShow(); 
        try { 
            Annotation[] annotation = metadata.getClass().getMethod("introHongLouMeng").getAnnotations(); 
            for(Annotation  a : annotation) { 
                System.out.println("作者:" +((BookAuthor)a).name()); 
                System.out.println("他的电子邮件(可能已被注销):"+((BookAuthor)a).email()); 
            }
        } catch (SecurityException e) {
            e.printStackTrace();
        }catch (NoSuchMethodException e) {
            e.printStackTrace();
        } 
    } 
}