Java tutorial
//package com.java2s; /** * * Funf: Open Sensing Framework * Copyright (C) 2010-2011 Nadav Aharony, Wei Pan, Alex Pentland. * Acknowledgments: Alan Gardner * Contact: nadav@media.mit.edu * * This file is part of Funf. * * Funf is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * Funf 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with Funf. If not, see <http://www.gnu.org/licenses/>. * */ import java.lang.reflect.Field; import java.util.List; public class Main { public static List<Field> getAllFieldsOfType(List<Field> fields, Class<?> type, Class<?> fieldType) { for (Field field : type.getDeclaredFields()) { if (fieldType == null || fieldType.isAssignableFrom(field.getType())) { fields.add(field); } } if (type.getSuperclass() != null) { fields = getAllFieldsOfType(fields, type.getSuperclass(), fieldType); } return fields; } }