注解的本质

public class Test {

    public static void main(String[] args) {
        Class clazz=Anno02.class;
        System.out.println("是否是接口");
        System.out.println(clazz.isInterface());//true
        System.out.println("===========继承那个接口=============");
        Class[] cs=clazz.getInterfaces();
        for (Class class1 : cs) {
            System.out.println(class1);//java.lang.annotation.Annotation
        }
        System.out.println("==========方法============");
        /**
         * 反射时候看到的注解属性就是方法：
         * public abstract java.lang.String cn.edu.xcu.annotation.v2.Anno02.m()
         */
        Method[] ms=clazz.getMethods();
        for (Method method : ms) {
            System.out.println(method);
        }
        System.out.println("==========字段============");
        Field[] fs=clazz.getFields();
        for (Field field : fs) {
            System.out.println(field);
        }
    }

}