metadatademo.java

来自「java 的好东西,,开发的基本语言语法教程」· Java 代码 · 共 23 行

import java.lang.annotation.Annotation;

public class MetadataDemo {
	@BookAuthor(name="曹雪芹",email="[e-mail]")  
    public void introHongLouMeng(String name) { 
        System.out.println("这是一本好书啊"+name); 
    } 
	public static void main(String[] args) { 
		MetadataDemo metadata = new MetadataDemo(); 
        try { 
            Annotation[] annotation = metadata.getClass().getMethod("introHongLouMeng",String.class).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();
        } 
    } 
}