Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via apache.org by Unknown author, 1 year ago
via Eclipse Bugzilla by lmcbout, 1 year ago
java.lang.NullPointerException: 	at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:488)	at java.lang.StringBuffer.append(StringBuffer.java:302)	at org.apache.log4j.helpers.ISO8601DateFormat.format(ISO8601DateFormat.java:132)	at java.text.DateFormat.format(DateFormat.java:314)	at org.apache.log4j.helpers.PatternParser$DatePatternConverter.convert(PatternParser.java:444)	at org.apache.log4j.helpers.PatternConverter.format(PatternConverter.java:64)	at org.apache.log4j.PatternLayout.format(PatternLayout.java:503)	at org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:301)	at org.apache.log4j.WriterAppender.append(WriterAppender.java:159)	at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:230)	at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:65)	at org.apache.log4j.Category.callAppenders(Category.java:203)	at org.apache.log4j.Category.forcedLog(Category.java:388)	at org.apache.log4j.Category.log(Category.java:853)	at org.apache.commons.logging.impl.Log4JLogger.info(Log4JLogger.java:133)	at org.apache.catalina.cluster.session.DeltaManager.start(DeltaManager.java:975)	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4137)	at org.apache.catalina.core.StandardContext.reload(StandardContext.java:2990)	at org.apache.catalina.manager.ManagerServlet.reload(ManagerServlet.java:906)	at org.apache.catalina.manager.HTMLManagerServlet.reload(HTMLManagerServlet.java:473)	at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:98)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)	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.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)	at org.apache.catalina.cluster.tcp.ReplicationValve.invoke(ReplicationValve.java:346)	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.Http11AprProcessor.process(Http11AprProcessor.java:833)	at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:639)	at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1285)	at java.lang.Thread.run(Thread.java:595)