Here you can find the source of arrayToString(double[] array, String separator)
public static String arrayToString(double[] array, 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. // w w w .ja v a 2 s .com * 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 arrayToString(double[] array, String separator) { int length = array.length; if (length == 0) return ""; StringBuilder sb = new StringBuilder(); for (int i = 0; i < length; ++i) { sb.append(array[i]); if (i < length - 1) sb.append(separator); } return sb.toString(); } }