Here you can find the source of toIntArray(Collection
| Parameter | Description |
|---|---|
| collection | Collection of Integers |
public static int[] toIntArray(Collection<Integer> collection)
//package com.java2s; /*// w ww . j a v a 2 s. c om * Copyright 2007-2013 VTT Biotechnology * This file is part of Guineu. * * Guineu 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 2 of the License, or (at your option) any later * version. * * Guineu 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 * Guineu; if not, write to the Free Software Foundation, Inc., 51 Franklin St, * Fifth Floor, Boston, MA 02110-1301 USA */ import java.util.Collection; import java.util.Iterator; public class Main { /** * Returns an array of ints consisting of the elements of the specified * collection. * * @param collection Collection of Integers * @return Array of ints */ public static int[] toIntArray(Collection<Integer> collection) { int array[] = new int[collection.size()]; int index = 0; Iterator<Integer> it = collection.iterator(); while (it.hasNext()) { array[index++] = it.next(); } return array; } }