Here you can find the source of isEmptyCollectionOrMap(Object content, Class> type)
private static boolean isEmptyCollectionOrMap(Object content, Class<?> type)
//package com.java2s; /*/*from w ww . j a v a 2 s.c o m*/ * Copyright (c) 2015. Escalon System-Entwicklung, Dietrich Schulten * * 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.util.*; public class Main { private static boolean isEmptyCollectionOrMap(Object content, Class<?> type) { if (Collection.class.isAssignableFrom(type)) { if (content == null) { return true; } else { if (((List) content).isEmpty()) { return true; } } } else if (Map.class.isAssignableFrom(type)) { if (content == null) { return true; } else { if (((List) content).isEmpty()) { return true; } } } return false; } }