Here you can find the source of join(Iterable
Parameter | Description |
---|---|
parts | a parameter |
delimiter | a parameter |
public static String join(Iterable<String> parts, String delimiter)
//package com.java2s; /******************************************************************************* * Copyright 2012-present Pixate, Inc.//from w ww .j a v a 2 s . c om * * 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. ******************************************************************************/ public class Main { public static final String EMPTY = ""; /** * Join a string array into a single string. The given delimiter will be * inserted between the string parts. * * @param parts * @param delimiter * @return a joint string. */ public static String join(String[] parts, String delimiter) { StringBuilder builder = new StringBuilder(); for (String s : parts) { builder.append(s).append(delimiter); } if (builder.length() > 0) { return builder.substring(0, builder.length() - delimiter.length()); } return EMPTY; } /** * Join a strings {@link Iterable} into a single string. The given delimiter * will be inserted between the string parts. * * @param parts * @param delimiter * @return a joint string. */ public static String join(Iterable<String> parts, String delimiter) { StringBuilder builder = new StringBuilder(); for (String s : parts) { builder.append(s).append(delimiter); } if (builder.length() > 0) { return builder.substring(0, builder.length() - delimiter.length()); } return EMPTY; } }