Java Reflection Annotation getAnnotation(@Nonnull Class cls, @Nonnull Class annotation)

License

Parameter

Declaration

public static <A extends Annotation> A getAnnotation(@Nonnull Class<?> cls, @Nonnull Class<A> annotation) 

Method Source Code

//package com.java2s;
/*/*from   w ww .  j av a 2 s .c  o  m*/
 * Copyright 2016-2017 Daniel Siviter
 *
 * 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;

import javax.annotation.Nonnull;

public class Main {
    /**
     * 
     * @param cls
     * @param annotation
     * @return
     */
    public static <A extends Annotation> A getAnnotation(@Nonnull Class<?> cls, @Nonnull Class<A> annotation) {
        return annotation.cast(cls.getAnnotation(annotation));
    }

    /**
     * 
     * @param obj
     * @param annotation
     * @return
     */
    public static <A extends Annotation> A getAnnotation(@Nonnull Object obj, @Nonnull Class<A> annotation) {
        return getAnnotation(obj.getClass(), annotation);
    }
}

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