Here you can find the source of implode(List
public static String implode(List<String> strings, String separator)
//package com.java2s; /*/*from w w w . j av a2s. c om*/ * Copyright 2010 Vodafone Group Services Ltd. * * 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 { public static String implode(List<String> strings, String separator) { StringBuffer buffer = new StringBuffer(); if (!strings.isEmpty()) { Iterator<String> i = strings.iterator(); buffer.append(i.next()); if (i.hasNext()) { buffer.append(separator); } } return buffer.toString(); } }