/* * Copyright (C) 2009 eXo Platform SAS. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package org.exoplatform.services.jcr.lab.cache; import junit.framework.TestCase; import java.util.HashMap; import java.util.Map; /** * Created by The eXo Platform SAS. * * <br>Date: 30.09.2008 * * @author <a href="mailto:peter.nedonosko@exoplatform.com.ua">Peter Nedonosko</a> * @version $Id: TestHashMapConcurrency.java 34801 2009-07-31 15:44:50Z dkatayev $ */ public class TestHashMapConcurrency extends TestCase { public void testHashMap() throws InterruptedException { final Map<String, Object> map = new HashMap<String, Object>(); // final Map<String, Object> map = Collections.synchronizedMap(new HashMap<String, Object>()); map.put("key-0", 0); Thread th1 = new Thread() { /* (non-Javadoc) * @see java.lang.Thread#run() */ @Override public void run() { try { // System.out.println(">>>>> in run() waiting 3sec..."); Thread.sleep(3000); } catch (InterruptedException e) { e.printStackTrace(); } for (int i = 1; i <= 10; i++) { map.put("key-" + i, i); // System.out.println("put key-" + i); } // System.out.println("<<<<< run() done."); } }; th1.start(); synchronized (map) { // System.out.println(">>>>>>>>>> synchronized (map)..."); // System.out.println("map.get " + map.get("key-0")); map.get("key-0"); // Thread.sleep(10000); // System.out.println("<<<<<<<<<< synchronized (map)."); } } }