Here you can find the source of listOf(E... elements)
@SafeVarargs public static <E> List<E> listOf(E... elements)
//package com.java2s; /*/*from w ww. ja va2s . co m*/ * Copyright 2010 the original author or authors. * * 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.*; public class Main { @SafeVarargs public static <E> List<E> listOf(E... elements) { List<E> result = new ArrayList<>(elements.length); result.addAll(Arrays.asList(elements)); return result; } }