Java Reflection Annotation getAnnotationAttributeValue(final Annotation annotation, final String attributeName)

Description

Retrieve the value of an Annotation's attribute

License

Apache License

Parameter

Parameter	Description
annotation	a parameter
attributeName	a parameter

Declaration

public static String getAnnotationAttributeValue(final Annotation annotation, final String attributeName) 

Method Source Code

//package com.java2s;
/*//  w  w w. j a  va 2  s . co  m
 * Copyright 2014 JBoss Inc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.lang.annotation.Annotation;

public class Main {
    /**
     * Retrieve the value of an Annotation's attribute
     * @param annotation
     * @param attributeName
     * @return
     */
    public static String getAnnotationAttributeValue(final Annotation annotation, final String attributeName) {
        String value = null;
        if (annotation != null) {
            try {
                value = annotation.annotationType().getMethod(attributeName).invoke(annotation).toString();
            } catch (Exception ex) {
                //Swallow
            }
        }
        return value;
    }
}

Related

1. getAnnotationAttribute(Annotation a, String attrName)
2. getAnnotationAttribute(final Annotation anno, final String attrName, final Class attrType)
3. getAnnotationAttributes(Annotation annotation)
4. getAnnotationAttributes(Annotation annotation)
5. getAnnotationAttributes(final Annotation annotation)
6. getAnnotationByType(AnnotatedElement element, Class annotationType)
7. getAnnotationByType(List annotations, Class annotationType)
8. getAnnotationClass(Annotation a)
9. getAnnotationClass(Annotation annotation)