Java tutorial
//package com.java2s; /* * Copyright 2002-2014 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 { /** * This method finds the difference between set A and set B i.e. set A minus set B * @param setA set A * @param setB set B * @param <T> type * @return a new set containing the difference */ public static <T> Set<T> difference(Set<T> setA, Set<T> setB) { Set<T> difference = new HashSet<T>(setA); difference.removeAll(setB); return difference; } }