Here you can find the source of toList(T element, T... elements)
public static <T> List<T> toList(T element, T... elements)
//package com.java2s; /******************************************************************************* * Copyright (c) 2012 Red Hat, Inc. /* w w w . ja v a 2 s . c o m*/ * Distributed under license by Red Hat, Inc. All rights reserved. * This program is made available under the terms of the * Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Red Hat, Inc. - initial API and implementation ******************************************************************************/ import java.util.ArrayList; import java.util.Collections; import java.util.List; public class Main { public static <T> List<T> toList(T element, T... elements) { List<T> allElements = new ArrayList<T>(); if (element != null) { allElements.add(element); } if (elements != null) { Collections.addAll(allElements, elements); } return allElements; } }