Here you can find the source of combine(String[] values, String separator)
public static String combine(String[] values, String separator)
//package com.java2s; /* This file is part of Openrouteservice. * * Openrouteservice is free software; you can redistribute it and/or modify it under the terms of the * GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 * of the License, or (at your option) any later version. //from ww w . j ava 2s . c o m * This library 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 Lesser General Public License for more details. * You should have received a copy of the GNU Lesser General Public License along with this library; * if not, see <https://www.gnu.org/licenses/>. */ public class Main { public static String combine(String[] values, String separator) { if (values == null) return null; String result = ""; int n = values.length; for (int i = 0; i < n; ++i) { result += values[i] + (i < n - 1 ? separator : ""); } return result; } }