Here you can find the source of join(List> objects, String delimiter)
public static String join(List<?> objects, String delimiter)
//package com.java2s; /*/*from ww w . ja v a 2 s.c o m*/ * Copyright 2013-2015 EMC Corporation. All Rights Reserved. * * Licensed under the Apache License, Version 2.0 (the "License"). * You may not use this file except in compliance with the License. * A copy of the License is located at * * http://www.apache.org/licenses/LICENSE-2.0.txt * * or in the "license" file accompanying this file. This file 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.List; public class Main { public static String join(List<?> objects, String delimiter) { String result = ""; for (Object object : objects) { if (result.length() > 0) result += delimiter; result += object.toString(); } return result; } }