Java tutorial
/** * Copyright (c) 2000-2005 Liferay, LLC. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package com.liferay.portal.events; import java.text.NumberFormat; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import com.liferay.portal.struts.Action; import com.liferay.portal.struts.ActionException; /** * <a href="LogMemoryUsageAction.java.html"><b><i>View Source</i></b></a> * * @author Brian Wing Shun Chan * @version $Revision: 1.16 $ * */ public class LogMemoryUsageAction extends Action { public void run(HttpServletRequest req, HttpServletResponse res) throws ActionException { Runtime runtime = Runtime.getRuntime(); NumberFormat nf = NumberFormat.getInstance(); String freeMemory = nf.format(runtime.freeMemory()); String totalMemory = nf.format(runtime.totalMemory()); String maxMemory = nf.format(runtime.maxMemory()); _log.debug("Memory Usage:\t" + freeMemory + "\t" + totalMemory + "\t" + maxMemory); } private static final Log _log = LogFactory.getLog(LogMemoryUsageAction.class); }