Check Browser closed

Is there any way to know in Java when the user closes the browser?

When I close the browser I get this exception but I dont know when and what
throws it :o(

WARNING: Error: java.io.IOException: Error flushing buffered stream
Feb 19, 2007 3:25:11 PM org.directwebremoting.util.CommonsLoggingOutput warn
WARNING: Sent 501
java.io.IOException: Error flushing buffered stream at
org.directwebremoting.dwrp.PollHandler.sendScript(PollHandler.java:373)
at org.directwebremoting.dwrp.PollHandler$PollScriptConduit.addScript
(PollHandler.java:483)
at
org.directwebremoting.extend.EnginePrivate.remoteHandleException
(EnginePrivate.java:118)
at org.directwebremoting.dwrp.PollHandler.handle(PollHandler.java:231)
at org.directwebremoting.servlet.UrlProcessor.handle(UrlProcessor.java:101)
at org.directwebremoting.servlet.DwrServlet.doPost(DwrServlet.java:120)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:173)
at
org.apache.catalina.core.StandardWrapperValve.invoke
(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke
(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.
processConnection(Http11BaseProtocol.java:664)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket
(PoolTcpEndpoint.java:527)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt
(LeaderFollowerWorkerThread.java:80)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run
(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)