Here you can find the source of newArrayList(A... elements)
@SafeVarargs public static <A> ArrayList<A> newArrayList(A... elements)
//package com.java2s; /*// ww w .j ava2 s .c om * Copyright (c) 2016 Catavolt Inc. All rights reserved. * * This file is part of Ozy. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.util.ArrayList; public class Main { @SafeVarargs public static <A> ArrayList<A> newArrayList(A... elements) { ArrayList<A> answer = new ArrayList<A>(elements.length); for (A e : elements) { answer.add(e); } return answer; } }