Here you can find the source of arrayToString(String[] values)
public static String arrayToString(String[] values)
//package com.java2s; /*// ww w . ja v a 2 s . co m * StringUtil.java * * This file is part of SQL Workbench/J, http://www.sql-workbench.net * * Copyright 2002-2017, Thomas Kellerer * * Licensed under a modified Apache License, Version 2.0 * that restricts the use for certain governments. * You may not use this file except in compliance with the License. * You may obtain a copy of the License at. * * http://sql-workbench.net/manual/license.html * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * To contact the author please send an email to: support@sql-workbench.net * */ public class Main { public static String arrayToString(String[] values) { if (values == null || values.length == 0) return ""; StringBuilder sb = new StringBuilder(values.length); for (int i = 0; i < values.length; i++) { if (i > 0) sb.append(','); sb.append(values[i]); } return sb.toString(); } public static String arrayToString(int[] values) { if (values == null) return null; StringBuilder sb = new StringBuilder(values.length); for (int i = 0; i < values.length; i++) { if (i > 0) sb.append(','); sb.append(Integer.toString(values[i])); } return sb.toString(); } }