testannotation.java

用NETBEANS做的一个关于Java的小小的demo.大家赐教

/*
 * TestAnnotation.java
 *
 * Created on 2007年9月19日, 下午11:32
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package newAnnotation;

import java.lang.reflect.AnnotatedElement;
import java.lang.reflect.Method;

/**
 *
 * @author Administrator
 */
@MyAnnotation(@Name(first="kevin",last="li"))
public class TestAnnotation {
    
    /** Creates a new instance of TestAnnotation */
    public TestAnnotation() {
    } 
    public void test(){
        
    }
    
    public static void main(String[] args) {
        try {
            (new TestAnnotation()).test();
            Class c = TestAnnotation.class;
            Method m = c.getMethod("test");
            System.out.println(m.isAnnotationPresent(MyAnnotation.class));
            AnnotatedElement target = TestAnnotation.class;
            MyAnnotation ma = target.getAnnotation(MyAnnotation.class);
            Name name = ma.value();
            String first = name.first();
            String last = name.last();
            System.out.printf("first:%s, second:%s",first,last);
        } catch (SecurityException ex) {
            ex.printStackTrace();
        } catch (NoSuchMethodException ex) {
            ex.printStackTrace();
        }
        
        
    }
    
}