Here you can find the source of prettyList(List> list)
public static String prettyList(List<?> list)
//package com.java2s; /*//from w w w . j ava 2s .c o m * The MIT License (MIT) * * Copyright (c) 2013-2019, Max Roncace <me@caseif.net> * * 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. */ import java.util.List; public class Main { public static String prettyList(List<?> list) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < list.size(); i++) { sb.append(list.get(i).toString()); if (i < list.size() - 2) { sb.append(", "); } else if (i == list.size() - 2) { if (list.size() > 2) { sb.append(","); } sb.append(" and "); } } return sb.toString(); } }