Here you can find the source of addAllTo(List
public static <T> boolean addAllTo(List<T> list, T... args)
//package com.java2s; /*************************GO-LICENSE-START********************************* * Copyright 2014 ThoughtWorks, Inc./*from w ww.j a v a 2 s.com*/ * * 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. *************************GO-LICENSE-END***********************************/ import java.util.List; import static java.util.Arrays.asList; public class Main { public static <T> boolean addAllTo(List<T> list, T... args) { return list.addAll(asList(args)); } }