package anotation;

import java.lang.annotation.Annotation;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import java.lang.reflect.Field;

/**

* Created by max on 2/19/17.

*/

public class AnnotationExample {

public static void main(String[] args) throws IllegalAccessException {

Person person = new Person();

print(person, person.getClass());

}

private static void print(Object o, Class c) throws IllegalAccessException {

Field[] fields = c.getDeclaredFields();

for (Field field : fields) {

Annotation[] annotations = field.getDeclaredAnnotations();

for (Annotation annotation : annotations) {

if(annotation.annotationType().equals(Show.class)) {

System.out.println(field.get(o));

}

}

}

}

}

@Retention(RetentionPolicy.RUNTIME)

@interface Show {

boolean value() default true;

}

class Person {

@Show

String name = "Max";

int age = 18;

}