Get the meta annotation from given annotation. - Java java.lang.annotation

Java examples for java.lang.annotation:Annotation Attribute

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Description

Get the meta annotation from given annotation.

Demo Code

/*// w w w .  j  ava2 s  .  c  om
 * dataSet - Test Support For Datastores.
 *
 * Copyright (C) 2014-2014 Marko Umek (http://fail-early.com/contact)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */
//package com.java2s;
import java.lang.annotation.Annotation;

public class Main {
    /**
     * Get the meta annotation from given annotation.
     * @param <T> the expect meta annotation
     * @param metaAnnotationClass the meta annotation class
     * @param annotation the annotation
     * @return the meta annotation
     */
    public static <T extends Annotation> T getMetaAnnotation(
            Class<T> metaAnnotationClass, Annotation annotation) {
        return getAnnotationClass(annotation).getAnnotation(
                metaAnnotationClass);
    }

    /**
     * Resolve the annotation's class.
     * @param annotation the annotation
     * @return the class object of the annotation.
     */
    public static Class<? extends Annotation> getAnnotationClass(
            Annotation annotation) {
        return annotation.annotationType();
    }
}

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