Java tutorial
//package com.java2s; /******************************************************************************* * Copyright (c) 2006-2010 eBay Inc. All Rights Reserved. * 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 *******************************************************************************/ import java.util.HashSet; import java.util.Set; public class Main { /** * One way diff. * * @param <T> the generic type * @param set1 the set1 * @param set2 the set2 * @return Uses the diff paradigm. Non destructive set1 - set2 */ public static <T> Set<T> oneWayDiff(Set<T> set1, Set<T> set2) { Set<T> tempSet1 = new HashSet<T>(set1); tempSet1.removeAll(set2); return tempSet1; } }