Here you can find the source of array2String(String[] category)
public static String array2String(String[] category)
//package com.java2s; /******************************************************************************* * The MIT License (MIT)//from w w w .ja v a 2s . co m * Copyright (c) 2013 Jing Pu, Yang Zhao, You Yuan, Huijie Yu * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. ******************************************************************************/ public class Main { public static String array2String(String[] category) { StringBuilder sb = new StringBuilder(); String delim = ""; if (category.length >= 1) { for (int i = 0; i < category.length; i++) { sb.append(delim).append(category[i]); delim = "#"; } } return sb.toString(); } }