Here you can find the source of asList(T element)
static <T> List<T> asList(T element)
//package com.java2s; /*/*ww w. ja va 2 s . c o m*/ * Copyright (c) 2011-2015 The original author or authors * * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * and Apache License v2.0 which accompanies this distribution. * * The Eclipse Public License is available at * http://www.eclipse.org/legal/epl-v10.html * * The Apache License v2.0 is available at * http://www.opensource.org/licenses/apache2.0.php * * You may elect to redistribute this code under either of these licenses. */ import java.util.Collections; import java.util.List; public class Main { static <T> List<T> asList(T element) { return Collections.singletonList(element); } }