Annotation例子

import java.lang.annotation.Annotation;


/**
 * Annotation例子
 * */

//Annotation标签
@interface MyAnnotation
{
	//属性要与方法的形式声明
	String AnnotationName();
	int age();
	
	//以default方式指定初始值
	double number() default 5.6;
	String name() default "test";
	
}

public class Annotaation3 {
	
	//属性需要指定初始值
	@MyAnnotation(AnnotationName = "Ok", age = 0)
	@TestAnnotian(i = 0, name = "")
	public void testAn(){
		
	}
	

	public static void main(String[] args) throws SecurityException, NoSuchMethodException, ClassNotFoundException {
		//获得Annotaation3类的testAn()方法的所有注释
		Annotation[] a = Class.forName("Annotaation3").getMethod("testAn").getAnnotations();
		
		//遍历所有注释
		for (Annotation an : a) {
			System.out.println(an);
		}
	}
}