Here you can find the source of collectionToString(Collection extends Object> list, String delimiter)
public static String collectionToString(Collection<? extends Object> list, String delimiter)
//package com.java2s; /******************************************************************************* * Copyright (c) 2006-2011 Gluster, Inc. <http://www.gluster.com> * This file is part of Gluster Management Console. * * Gluster Management Console 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. * * Gluster Management Console 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.Collection; public class Main { public static String collectionToString(Collection<? extends Object> list, String delimiter) { if (list.size() == 0) { return ""; }/* w w w .j a v a 2s . c o m*/ StringBuilder output = new StringBuilder(); for (Object element : list) { output.append(element.toString()).append(delimiter); } String outputStr = output.toString(); int endIndex = outputStr.length() - delimiter.length(); return outputStr.substring(0, endIndex); } }