TaskThread$WrappingRunnable.run() has thrown a NullPointerException

java.lang.NullPointerException
Javadoc
Thrown when an application attempts to use {@code null} in a case where an object is required. These include:
  • Calling the instance method of a {@code null} object.
  • Accessing or modifying the field of a {@code null} object.
  • Taking the length of {@code null} as if it were an array.
  • Accessing or modifying the slots of {@code null} as if it were an array.
  • Throwing {@code null} as if it were a {@code Throwable} value.

Applications should throw instances of this class to indicate other illegal uses of the {@code null} object. {@code NullPointerException} objects may be constructed by the virtual machine as if {@linkplain Throwable#Throwable(String, Throwable, boolean, boolean) suppression were disabled and/or the stack trace was not writable}. @author unascribed @since JDK1.0

at org.apache.jsp.demo1_jsp.getJoinURL
at org.apache.jsp.demo1_jsp._jspService
at org.apache.jasper.runtime.HttpJspBase.service
(source)
at javax.servlet.http.HttpServlet.service
(source)
at org.apache.jasper.servlet.JspServletWrapper.service
(source)
at org.apache.jasper.servlet.JspServlet.serviceJspFile
(source)
at org.apache.jasper.servlet.JspServlet.service
(source)
at javax.servlet.http.HttpServlet.service
(source)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(source)
at org.apache.catalina.core.ApplicationFilterChain.doFilter
(source)
at org.apache.tomcat.websocket.server.WsFilter.doFilter
(source)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(source)
at org.apache.catalina.core.ApplicationFilterChain.doFilter
(source)
at org.apache.catalina.core.StandardWrapperValve.invoke
(source)
at org.apache.catalina.core.StandardContextValve.invoke
(source)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke
(source)
at org.apache.catalina.core.StandardHostValve.invoke
(source)
at org.apache.catalina.valves.ErrorReportValve.invoke
(source)
at org.apache.catalina.valves.AccessLogValve.invoke
at org.apache.catalina.core.StandardEngineValve.invoke
(source)
at org.apache.catalina.connector.CoyoteAdapter.service
(source)
at org.apache.coyote.http11.AbstractHttp11Processor.process
(source)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process
(source)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run
(source)
at java.util.concurrent.ThreadPoolExecutor.runWorker
(source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run
(source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run
(source)
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Typical Exception Messages

  1. <No message>

Origin

ApplicationFilterChain.doFilter() has thrown a NullPointerException

java.lang.NullPointerException
9 frames hidden
org.apache.catalina.core.ApplicationFilterChain.doFilter
39Web pages

Similar

Specific cases

External results for this pattern (3)

  1. Unknown authorvia Google Groups9 months ago
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  2. Abderrazak EL YOUSFIvia Google Groups1 year ago
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  3. FredM.via Google Groups1 year ago
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