Java tutorial
//package com.java2s; /** * Aptana Studio * Copyright (c) 2005-2011 by Appcelerator, Inc. All Rights Reserved. * Licensed under the terms of the GNU Public License (GPL) v3 (with exceptions). * Please see the license.html included with this distribution for details. * Any modifications to this file must keep this entire header intact. */ import java.util.Collections; import java.util.Set; public class Main { /** * This is a convenience method that essentially checks for a null set and returns Collections.emptySet in that * case. If the set is non-null, then this is an identity function. * * @param <T> * @param set * @return */ public static <T> Set<T> getSetValue(Set<T> set) { if (set == null) { return Collections.emptySet(); } return set; } }