How to solve this error "HTTP Status 500"?



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type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

java.lang.NullPointerException
org.apache.catalina.manager.HTMLManagerServlet.list(HTMLManagerServlet.java:423)
org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:161)
javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)


note The full stack trace of the root cause is available in the Tomcat logs.


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Apache Tomcat/5.0.14

Questions by mythilikumar

  

Editorial / Best Answer

Answered by: murali

  • May 17th, 2006

NullPointer Exception is a typical exception thrown when you tries to set incompatible datatypes without casting them

Showing Answers 1 - 3 of 3 Answers

murali

  • May 17th, 2006
 

NullPointer Exception is a typical exception thrown when you tries to set incompatible datatypes without casting them

Saroj

  • Aug 24th, 2006
 

I m getting so many times "this" error along with "The server encounter an error() that prevented it from fulfilling this requirement...So would u please tell how to solve this.

Mikin R Patel

  • Jul 20th, 2011
 

you r absolutely right bro......Murali
it may sometimes happen that time "When you connect text file to retrieve data from it..sometimes connection could not established or may not open" and can not initialize CONTEXT PARAMETER from file in Servlet programing

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