Here you can find the source of createArrayList(Collection extends T> arg)
public static <T> List<T> createArrayList(Collection<? extends T> arg)
//package com.java2s; /**/* w w w.j a va2 s . c om*/ * Task Accelerator - Full ajax task management application run on Google App Engine - * Copyright (C) 2011 tnakamura * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.util.ArrayList; import java.util.Collection; import java.util.List; public class Main { public static <T> List<T> createArrayList() { return new ArrayList<T>(); } public static <T> List<T> createArrayList(Collection<? extends T> arg) { return new ArrayList<T>(arg); } }