[jboss-user] [Beginner's Corner] - Help: java.lang.ClassNotFoundException Error.

[Qasim Mansoor]

Qasim Mansoor [https://community.jboss.org/people/qasimmansoor] created the discussion

"Help: java.lang.ClassNotFoundException Error."

To view the discussion, visit: https://community.jboss.org/message/742243#742243

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Dear All,

I am developing a smiple web application with one servlet & one jsp page. I am getting +java.lang.ClassNotFoundException+ error. Any Ideas how to fix this?

Following is the error:

*Error Message:*

HTTP Status 500 -
type Exception report

*message*
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: java.lang.ClassNotFoundException: org.apache.jsp.index_jsp
 org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:151)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
*root cause*

java.lang.ClassNotFoundException: org.apache.jsp.index_jsp
 java.net.URLClassLoader$1.run(URLClassLoader.java:202)
 java.security.AccessController.doPrivileged(Native Method)
 java.net.URLClassLoader.findClass(URLClassLoader.java:190)
 org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:135)
 org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:67)
 org.jboss.web.tomcat.service.TomcatInjectionContainer.newInstance(TomcatInjectionContainer.java:262)
 org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:145)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

*In JBOSS Console:*

11:21:17,643 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
java.lang.ClassNotFoundException: org.apache.jsp.index_jsp
 at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
 at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:135)
 at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:67)
 at org.jboss.web.tomcat.service.TomcatInjectionContainer.newInstance(TomcatInjectionContainer.java:262)
 at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:145)
 at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
 at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322)
 at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249)
 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.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
 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:235)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
 at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
 at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
 at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
 at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
 at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
 at java.lang.Thread.run(Thread.java:662)

Thanks in Advance.

Br,
./Qasim
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