Here you can find the source of listToString(List> l, String delim)
public static String listToString(List<?> l, String delim)
//package com.java2s; /*//from w ww. j a v a 2s . c o m * YAJHFC - Yet another Java Hylafax client * Copyright (C) 2005-2007 Jonas Wolz * * 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 2 * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ import java.util.List; public class Main { public static String listToString(List<?> 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(); } }