Java tutorial
//package com.java2s; /* * Copyright (C) 2015 The Android Open Source Project * * 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 java.util.ArrayList; import java.util.List; import javax.annotation.processing.RoundEnvironment; import javax.lang.model.element.Element; public class Main { /** * Returns only the elements that are annotated with the given class. For some reason * RoundEnvironment is returning elements annotated by other annotations. */ static List<Element> getElementsAnnotatedWith(RoundEnvironment roundEnv, Class<? extends Annotation> annotationClass) { ArrayList<Element> elements = new ArrayList<Element>(); for (Element element : roundEnv.getElementsAnnotatedWith(annotationClass)) { if (element.getAnnotation(annotationClass) != null) { elements.add(element); } } return elements; } }