Java Reflection Annotation getAnnotation(Class annotationType, AnnotatedElement... objects)

Description

Utility method to read out repeatable annotations.

License

Apache License

Parameter

Parameter	Description
annotationType	the annotation type.
objects	the accessible objects to be looked up
T	the repeatable annotation type

Return

a list with the annotations found (could be empty, but never null).

Declaration

public static <T extends Annotation> T getAnnotation(Class<T> annotationType, AnnotatedElement... objects) 

Method Source Code

//package com.java2s;
/*//from   w  w  w  .j  a  v  a  2s .  c o m
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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;

import java.lang.reflect.AnnotatedElement;

public class Main {
    /**
     * Utility method to read out repeatable annotations.
     * @param annotationType the annotation type.
     * @param objects the accessible objects to be looked up
     * @param <T> the repeatable annotation type
     * @return a list with the annotations found (could be empty, but never null).
     */
    public static <T extends Annotation> T getAnnotation(Class<T> annotationType, AnnotatedElement... objects) {
        for (AnnotatedElement obj : objects) {
            T annot = obj.getAnnotation(annotationType);
            if (annot != null) {
                return annot;
            }
        }
        return null;
    }
}

Related

1. getAnnotation(Class at, Enum enu)
2. getAnnotation(Class realClass, String pAttributeName, Class annotationClass)
3. getAnnotation(Class a, Class c)
4. getAnnotation(Class annotation, Class ownerClass, Method method)
5. getAnnotation(Class annotationClass, Class cls)
6. getAnnotation(Class cl, Object o)
7. getAnnotation(Class clazz, Method method, int parameterIndex)
8. getAnnotation(Class cls, Annotation... annotations)
9. getAnnotation(Class cls, Method... methods)