Java tutorial
/* * JBoss, Home of Professional Open Source * Copyright 2010, Red Hat, Inc., and individual contributors * by the @authors tag. See the copyright.txt in the distribution for a * full listing of individual contributors. * * 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. */ package org.jboss.weld.util.collections; import java.util.Set; import java.util.concurrent.ConcurrentHashMap; import com.google.common.base.Supplier; import com.google.common.collect.Sets; /** * Supplies a high-performant concurrent hash set. Can be used for producing concurrent multimaps. * * @author Jozef Hartinger * */ public class ConcurrentHashSetSupplier<T> implements Supplier<Set<T>> { @Override public Set<T> get() { return Sets.newSetFromMap(new ConcurrentHashMap<T, Boolean>()); } }