Here you can find the source of asSet(T... values)
@SafeVarargs public static <T> Set<T> asSet(T... values)
//package com.java2s; /*/* w w w . jav a2s . c o m*/ * Copyright (C) 2000 - 2018 Silverpeas * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * As a special exception to the terms and conditions of version 3.0 of * the GPL, you may redistribute this Program in connection with Free/Libre * Open Source Software ("FLOSS") applications as described in Silverpeas's * FLOSS exception. You should have received a copy of the text describing * the FLOSS exception, and it is also available here: * "https://www.silverpeas.org/legal/floss_exception.html" * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.HashSet; import java.util.List; import java.util.Set; public class Main { @SafeVarargs public static <T> Set<T> asSet(T... values) { return new HashSet<>(Arrays.asList(values)); } @SafeVarargs public static <T> List<T> asList(T... values) { List<T> listWithValues = new ArrayList<>(); Collections.addAll(listWithValues, values); return listWithValues; } }