Here you can find the source of join(List
Parameter | Description |
---|---|
strList | List of strings. |
sep | String to put between items when joining. |
static String join(List<String> strList, String sep)
//package com.java2s; /*// ww w. j av a 2 s . c o m Copyright 2010 Dmitry Naumenko (dm.naumenko@gmail.com) Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 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. */ import java.util.Iterator; import java.util.List; public class Main { /** * Join a list of strings using a specified separator. * @param strList List of strings. * @param sep String to put between items when joining. * @return Joined string. */ static String join(List<String> strList, String sep) { StringBuilder builder = new StringBuilder(); for (final Iterator<String> i = strList.iterator(); i.hasNext();) { final String s = i.next(); builder.append(s); if (i.hasNext()) builder.append(sep); } return builder.toString(); } }