Here you can find the source of listToString(Collection l, String delim)
public static String listToString(Collection<?> l, String delim)
//package com.java2s; /*/*from w ww . java 2s.c om*/ * YAJHFC - Yet another Java Hylafax client * Copyright (C) 2005-2011 Jonas Wolz <info@yajhfc.de> * * 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/>. * * Linking YajHFC statically or dynamically with other modules is making * a combined work based on YajHFC. Thus, the terms and conditions of * the GNU General Public License cover the whole combination. * In addition, as a special exception, the copyright holders of YajHFC * give you permission to combine YajHFC with modules that are loaded using * the YajHFC plugin interface as long as such plugins do not attempt to * change the application's name (for example they may not change the main window title bar * and may not replace or change the About dialog). * You may copy and distribute such a system following the terms of the * GNU GPL for YajHFC and the licenses of the other code concerned, * provided that you include the source code of that other code when * and as the GNU GPL requires distribution of source code. * * Note that people who make modified versions of YajHFC are not obligated to grant * this special exception for their modified versions; it is their choice whether to do so. * The GNU General Public License gives permission to release a modified * version without this exception; this exception also makes it possible * to release a modified version which carries forward this exception. */ import java.util.Collection; public class Main { public static String listToString(Collection<?> l, String delim) { StringBuilder s = new StringBuilder(); if (l.size() == 0) { return ""; } for (Object o : l) { s.append(o).append(delim); } s.delete(s.length() - delim.length(), s.length()); return s.toString(); } }