Java Reflection Annotation getAnnotation(Class clazz, Class annotationClass)

License

Parameter

Return

Declaration

public static <A extends Annotation> A getAnnotation(Class<?> clazz, Class<A> annotationClass) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.lang.annotation.Annotation;

public class Main {
    /**//w  w  w.j  a v  a2 s. c om
     * This is proxy ready implementation {@link Class#getAnnotation(Class)}.
     *
     * @param clazz           the class to be tested
     * @param annotationClass the annotation be be looked up
     * @param <A>             the annotation type
     * @return {@code true} if the {@code clazz} or its super-class(s) is annotated by {@code annotationClass}
     */
    public static <A extends Annotation> A getAnnotation(Class<?> clazz, Class<A> annotationClass) {
        final A annotation = clazz.getAnnotation(annotationClass);

        if (annotation == null && clazz.isSynthetic()) { //OK, this is probably proxy
            return getAnnotation(clazz.getSuperclass(), annotationClass);
        } else {
            return annotation;
        }
    }
}

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