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Artima Weblogs
Notes from Underfoot A Weblog by Ken Arnold |
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 Ken Arnold is a programmer and author who helped create Jini, JavaSpaces, Curses, and Rogue.
Artima Bloggers
Aahz Jans Aasman B. Scott Andersen Eric Armstrong Ken Arnold Dale Asberry Dave Astels Arash Barirani Matt Bauer Charles Bell Berco Beute Geert Bevin Nitin Borwankar Vladimir Ritz Bossicard Rahul Chaudhary Bob Clancy James O. Coplien Ward Cunningham Andy Dent Christopher Diggins Bruce Eckel Ted Farrell Michael Feathers Elisabeth Freeman Eric Freeman Matt Gerrans David Goodger Gabe Grigorescu Rix Groenboom Cees de Groot Philipp Haller Peter Hansen David Heinemeier Hansson Kevlin Henney Steve Holden Cay Horstmann Ron Jeffries Mark Johnson Greg Jorgensen Heinz Kabutz Rick Kitts Kirk Knoernschild Andrew Koenig Klaus Kreft Sean Landis Angelika Langer Jakob Eg Larsen Josh Long Howard Lovatt Robert C. Martin John McClain Eamonn McManus Jeremy Meyer John D. Mitchell Brian Murphy Sean Neville Nancy Nicolaisen Martin Odersky Vlad Patryshev Johan Peeters Carlos Perez Ken Pugh Eric S. Raymond Ian Robertson Guido van van Rossum Alberto Savoia Jerome Scheuring Richard Hale Shaw Calum Shaw-Mackay Jack Shirazi Michele Simionato Van Simmons Frank Sommers Bruno Souza
Error Occurred
Sadly, the following error has occurred. If you believe it to be a bug, please report it to webmaster@artima.com.
java.lang.NullPointerException
at com.jivesoftware.forum.database.DbForum.getCount(DbForum.java:1522)
at com.jivesoftware.forum.database.DbForum.getMessageCount(DbForum.java:764)
at com.jivesoftware.forum.ForumProxy.getMessageCount(ForumProxy.java:291)
at org.apache.jsp.weblogs.index_jsp._jspService(Unknown Source)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at com.artima.webmvc.SharedSessionFilter.doFilter(SharedSessionFilter.java:62)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at com.artima.webmvc.SsoFilter.doFilter(SsoFilter.java:86)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at com.jivesoftware.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:40)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:221)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:333)
at org.apache.catalina.ha.session.JvmRouteBinderValve.invoke(JvmRouteBinderValve.java:218)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436)
at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:190)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
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