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 Apereo Issues by Alan Berg, 1 year ago
This exception has no message.
via Apereo Issues by Alan Berg, 1 year ago
This exception has no message.
via Google Groups by Mr.Pâs¢hï!, 3 months ago
via Google Groups by Sayid Shabeer, 5 months ago
via Oracle Community by 3004, 1 year ago
via Google Groups by bmv, 6 months ago
java.lang.NullPointerException: 	at java.util.Hashtable.get(Hashtable.java:351)	at com.sun.org.apache.xerces.internal.dom.CoreDocumentImpl.getIdentifier(CoreDocumentImpl.java:2020)	at com.sun.org.apache.xerces.internal.dom.CoreDocumentImpl.getElementById(CoreDocumentImpl.java:1964)	at org.jasig.portal.layout.dlm.DistributedLayoutManager.getParentId(DistributedLayoutManager.java:1172)	at org.jasig.portal.layout.TransientUserLayoutManagerWrapper.getParentId(TransientUserLayoutManagerWrapper.java:235)	at org.jasig.portal.layout.dlm.remoting.UpdatePreferencesServlet.isTab(UpdatePreferencesServlet.java:855)	at org.jasig.portal.layout.dlm.remoting.UpdatePreferencesServlet.addPortlet(UpdatePreferencesServlet.java:533)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:616)	at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)	at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)	at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:669)	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:585)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:70)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.springframework.web.filter.ShallowEtagHeaderFilter.doFilterInternal(ShallowEtagHeaderFilter.java:58)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:83)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:113)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:291)	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)	at java.lang.Thread.run(Thread.java:679)