Here you can find the source of concatenateListOfStrings(List
public static String concatenateListOfStrings(List<String> list, String separator)
//package com.java2s; /******************************************************************************* * Copyright (c) 2015 SAP and others.//w w w . j a v a 2s .c om * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * Contributors: * SAP - initial API and implementation *******************************************************************************/ import java.util.List; public class Main { public static String concatenateListOfStrings(List<String> list, String separator) { StringBuffer buff = new StringBuffer(); for (String s : list) { buff.append(s).append(separator); } return buff.toString(); } }