Java tutorial
//package com.java2s; /******************************************************************************* * Copyright 2015 * Ubiquitous Knowledge Processing (UKP) Lab * Technische Universitt Darmstadt * * 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.Collection; import java.util.HashSet; import java.util.Set; public class Main { public static <T> Collection<T> intersection(final Collection<T> collection1, final Collection<T> collection2) { final Set<T> set = new HashSet<T>(collection1); set.retainAll(collection2); return set; } }