Here you can find the source of getAllFields(List
public static List<Field> getAllFields(List<Field> fields, Class<?> type)
//package com.java2s; /**//from w w w. j a va 2 s . c o m * JBoss, Home of Professional Open Source * Copyright Red Hat, Inc., and individual contributors. * * 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.reflect.Field; import java.util.Collections; import java.util.List; public class Main { public static List<Field> getAllFields(List<Field> fields, Class<?> type) { Collections.addAll(fields, type.getDeclaredFields()); if (type.getSuperclass() != null) { fields = getAllFields(fields, type.getSuperclass()); } return fields; } }