instead of this
<%if (!session.getAttribute("serNo").toString().equals("")) {%>
try this..
"".equals(string variable)
ravi
iZone Infotech wrote:
> I think the problem is with the following line.
> session.getAttribute("serNo").toString().equals("")
>
> If you do not have serNo, it will return null and NOT empty ("") which
you
> are checking. The best option could be to get these values in
variables, by
> putting them in a try..catch.
>
> For ex.
>
> String serno;
> try{
> serno=session.getAttribute("serNo");
> // You are here if serno is NOT null ... (write your code below)
> // You can have another try..catch here to check the next variable
and
> so on.
>
> }
> catch (NullPointerException npe)
> {
> // You are here if serno IS null ... (write your code below)
>
> }
>
> It should work, logically. You need to test it out.
>
> Best Regards,
>
> Dantus
>
> ----- Original Message -----
> From: Sachin S. Khanna <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Tuesday, March 13, 2001 12:19 PM
> Subject: Re: Internal Server Error
>
> > One possible reason for the NullPointerException could be that you
are not
> > checking for null in your code.
> > Try the following :
> > After retrieving an object from the session check for null before
calling
> > the toString() method on it.
> > Assume this will put you in the right direction to solving your
problem.
> > Have a nice day.
> > With regards,
> > Sachin S. Khanna.
> > www.emailanorder.com
> >
> > ----- Original Message -----
> > From: Sello Mathibe <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Monday, March 12, 2001 7:11 PM
> > Subject: Re: Internal Server Error
> >
> >
> > > Thanks. The following JSP I use to call either LeaveForm.jsp or
> > > busUnManResp.jsp. Whenever I call it, I get the error that follows
the
> > code.
> > >
> > > <%@ page contentType="text/html;charset=WINDOWS-1252"%>
> > > <FRAMESET COLS="100%,0%" ROWS = "60%,40%">
> > > <%if (!session.getAttribute("serNo").toString().equals(""))
{%>
> > > <FRAME
> > > SRC="LeaveForm.jsp?serNo=<%=session.getAttribute("serNo")%>">
> > > <FRAME SRC="">
> > > <FRAME
> > SRC="BusUnManRep.jsp?serNo=<%=session.getAttribute("serNo")%>">
> > > <%}else if
> > >
>
(session.getAttribute("typeOf").toString().equals("BusinessUnitManager")||
> > > (
> > >
(session.getAttribute("typeOf").toString().equals("NormalEmployee"))&&
> > >
> >
> (!request.getParameter("serNo").toString().equals(""))
) ){%>
> > > <FRAME
> > SRC="LeaveForm.jsp?serNo=<%=request.getParameter("serNo")%>">
> > > <FRAME SRC="">
> > > <FRAME
> > > SRC="BusUnManRep.jsp?serNo=<%=request.getParameter("serNo") %>">
> > > <%} else {%>
> > > <FRAME SRC="LeaveForm.jsp?serNo=""">
> > > <FRAME SRC="">
> > > <FRAME SRC="BusUnManRep.jsp?serNo=""">
> > > <%}%>
> > > </frameset>
> > >
> > > The ERROR:
> > >
> > > Error: 500
> > > Location: /LeaveForm/BusUnManRep.jsp
> > > Internal Servlet Error:
> > >
> > > org.apache.jasper.JasperException: Unable to compile class for JSP
> > > void
> > >
> >
>
org.apache.jasper.servlet.JspServlet.service(javax.servlet.http.HttpServletR
> > > equest, javax.servlet.http.HttpServletResponse)
> > > void
> > >
javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest,
> > > javax.servlet.ServletResponse)
> > > void
> > >
> >
>
org.apache.tomcat.core.ServletWrapper.doService(org.apache.tomcat.core.Reque
> > > st, org.apache.tomcat.core.Response)
> > > void
> > >
org.apache.tomcat.core.Handler.service(org.apache.tomcat.core.Request,
> > > org.apache.tomcat.core.Response)
> > > void
> > >
> >
>
org.apache.tomcat.core.ServletWrapper.service(org.apache.tomcat.core.Request
> > > , org.apache.tomcat.core.Response)
> > > void
> > >
> >
>
org.apache.tomcat.core.ContextManager.internalService(org.apache.tomcat.core
> > > .Request, org.apache.tomcat.core.Response)
> > > void
> > >
> >
>
org.apache.tomcat.core.ContextManager.service(org.apache.tomcat.core.Request
> > > , org.apache.tomcat.core.Response)
> > > void
> > >
> >
>
org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection
> > > (org.apache.tomcat.service.TcpConnection, java.lang.Object[])
> > > void
> > >
org.apache.tomcat.service.TcpWorkerThread.runIt(java.lang.Object[])
> > > void
org.apache.tomcat.util.ThreadPool$ControlRunnable.run()
> > > void java.lang.Thread.run()
> > >
> > > Root cause:
> > > java.lang.NullPointerException
> > > void
> > >
> >
>
org.apache.jasper.servlet.JspServlet.service(javax.servlet.http.HttpServletR
> > > equest, javax.servlet.http.HttpServletResponse)
> > > void
> > >
javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest,
> > > javax.servlet.ServletResponse)
> > > void
> > >
> >
>
org.apache.tomcat.core.ServletWrapper.doService(org.apache.tomcat.core.Reque
> > > st, org.apache.tomcat.core.Response)
> > > void
> > >
org.apache.tomcat.core.Handler.service(org.apache.tomcat.core.Request,
> > > org.apache.tomcat.core.Response)
> > > void
> > >
> >
>
org.apache.tomcat.core.ServletWrapper.service(org.apache.tomcat.core.Request
> > > , org.apache.tomcat.core.Response)
> > > void
> > >
> >
>
org.apache.tomcat.core.ContextManager.internalService(org.apache.tomcat.core
> > > .Request, org.apache.tomcat.core.Response)
> > > void
> > >
> >
>
org.apache.tomcat.core.ContextManager.service(org.apache.tomcat.core.Request
> > > , org.apache.tomcat.core.Response)
> > > void
> > >
> >
>
org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection
> > > (org.apache.tomcat.service.TcpConnection, java.lang.Object[])
> > > void
> > >
org.apache.tomcat.service.TcpWorkerThread.runIt(java.lang.Object[])
> > > void
org.apache.tomcat.util.ThreadPool$ControlRunnable.run()
> > > void java.lang.Thread.run()
> > >
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: Sachin S. Khanna [mailto:[EMAIL PROTECTED]]
> > > Sent: 12 March 2001 12:26
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: Internal Server Error
> > >
> > >
> > > Well if you go through the error that is being generated you fill
find
> > that
> > > it states that the root cause for the error is
> > > java.lang.NullPointerException.
> > > If you provide us the code we might be able to help you further.
> > > Have a nice day.
> > > With regards,
> > > Sachin S. Khanna.
> > > www.emailanorder.com
> > >
> > > ----- Original Message -----
> > > From: Sello Mathibe <[EMAIL PROTECTED]>
> > > To: <[EMAIL PROTECTED]>
> > > Sent: Monday, March 12, 2001 3:00 PM
> > > Subject: Internal Server Error
> > >
> > >
> > > > Hi Gurus! I'm still a newbie to JSPs and Servlets, can you
please tell
> > me
> > > > what the error below means. I'm currently running NT 4, Apache +
> Tomcat.
> > I
> > > > get the error when I try to access the JSP page. I've defined my
> > servlets
> > > in
> > > > my web.xml and server.xml. All the other JSPs are running quite
good
> > > except
> > > > for the other one. I think the problem might be with the
> > > > org.apache.jasper.JasperException.
> > > > Can somebody out there help me? I will really appreciate it.
> > > > Thank You
> > > > Error: 500
> > > > Location: /LeaveForm/BusUnManRep.jsp
> > > > Internal Servlet Error:
> > > > org.apache.jasper.JasperException: Unable to compile class for
JSP
> > > > void
> > > >
> > >
> >
>
org.apache.jasper.servlet.JspServlet.service(javax.servlet.http.HttpServletR
> > > > equest, javax.servlet.http.HttpServletResponse)
> > > > void
> > > >
javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest,
> > > > javax.servlet.ServletResponse)
> > > > void
> > > >
> > >
> >
>
org.apache.tomcat.core.ServletWrapper.doService(org.apache.tomcat.core.Reque
> > > > st, org.apache.tomcat.core.Response)
> > > > void
> > > >
org.apache.tomcat.core.Handler.service(org.apache.tomcat.core.Request,
> > > > org.apache.tomcat.core.Response)
> > > > void
> > > >
> > >
> >
>
org.apache.tomcat.core.ServletWrapper.service(org.apache.tomcat.core.Request
> > > > , org.apache.tomcat.core.Response)
> > > > void
> > > >
> > >
> >
>
org.apache.tomcat.core.ContextManager.internalService(org.apache.tomcat.core
> > > > .Request, org.apache.tomcat.core.Response)
> > > > void
> > > >
> > >
> >
>
org.apache.tomcat.core.ContextManager.service(org.apache.tomcat.core.Request
> > > > , org.apache.tomcat.core.Response)
> > > > void
> > > >
> > >
> >
>
org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection
> > > > (org.apache.tomcat.service.TcpConnection, java.lang.Object[])
> > > > void
> > > >
org.apache.tomcat.service.TcpWorkerThread.runIt(java.lang.Object[])
> > > > void
org.apache.tomcat.util.ThreadPool$ControlRunnable.run()
> > > > void java.lang.Thread.run()
> > > > Root cause:
> > > > java.lang.NullPointerException
> > > > void
> > > >
> > >
> >
>
org.apache.jasper.servlet.JspServlet.service(javax.servlet.http.HttpServletR
> > > > equest, javax.servlet.http.HttpServletResponse)
> > > > void
> > > >
javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest,
> > > > javax.servlet.ServletResponse)
> > > > void
> > > >
> > >
> >
>
org.apache.tomcat.core.ServletWrapper.doService(org.apache.tomcat.core.Reque
> > > > st, org.apache.tomcat.core.Response)
> > > > void
> > > >
org.apache.tomcat.core.Handler.service(org.apache.tomcat.core.Request,
> > > > org.apache.tomcat.core.Response)
> > > > void
> > > >
> > >
> >
>
org.apache.tomcat.core.ServletWrapper.service(org.apache.tomcat.core.Request
> > > > , org.apache.tomcat.core.Response)
> > > > void
> > > >
> > >
> >
>
org.apache.tomcat.core.ContextManager.internalService(org.apache.tomcat.core
> > > > .Request, org.apache.tomcat.core.Response)
> > > > void
> > > >
> > >
> >
>
org.apache.tomcat.core.ContextManager.service(org.apache.tomcat.core.Request
> > > > , org.apache.tomcat.core.Response)
> > > > void
> > > >
> > >
> >
>
org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection
> > > > (org.apache.tomcat.service.TcpConnection, java.lang.Object[])
> > > > void
> > > >
org.apache.tomcat.service.TcpWorkerThread.runIt(java.lang.Object[])
> > > > void
org.apache.tomcat.util.ThreadPool$ControlRunnable.run()
> > > > void java.lang.Thread.run()
> > > >
> > > >
> > >
> >
>
===========================================================================
> > > > To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff
> > > JSP-INTEREST".
> > > > For digest: mailto [EMAIL PROTECTED] with body: "set
JSP-INTEREST
> > > DIGEST".
> > > > Some relevant FAQs on JSP/Servlets can be found at:
> > > >
> > > > http://java.sun.com/products/jsp/faq.html
> > > > http://www.esperanto.org.nz/jsp/jspfaq.html
> > > > http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
> > > > http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
> > > >
> > >
> > >
> >
>
===========================================================================
> > > To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff
> > > JSP-INTEREST".
> > > For digest: mailto [EMAIL PROTECTED] with body: "set
JSP-INTEREST
> > > DIGEST".
> > > Some relevant FAQs on JSP/Servlets can be found at:
> > >
> > > http://java.sun.com/products/jsp/faq.html
> > > http://www.esperanto.org.nz/jsp/jspfaq.html
> > > http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
> > > http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
> > >
> > >
> >
>
===========================================================================
> > > To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff
> > JSP-INTEREST".
> > > For digest: mailto [EMAIL PROTECTED] with body: "set
JSP-INTEREST
> > DIGEST".
> > > Some relevant FAQs on JSP/Servlets can be found at:
> > >
> > > http://java.sun.com/products/jsp/faq.html
> > > http://www.esperanto.org.nz/jsp/jspfaq.html
> > > http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
> > > http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
> > >
> >
> >
>
===========================================================================
> > To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff
> JSP-INTEREST".
> > For digest: mailto [EMAIL PROTECTED] with body: "set
JSP-INTEREST
> DIGEST".
> > Some relevant FAQs on JSP/Servlets can be found at:
> >
> > http://java.sun.com/products/jsp/faq.html
> > http://www.esperanto.org.nz/jsp/jspfaq.html
> > http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
> > http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
> >
>
>
===========================================================================
> To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff
JSP-INTEREST".
> For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST
DIGEST".
> Some relevant FAQs on JSP/Servlets can be found at:
>
> http://java.sun.com/products/jsp/faq.html
> http://www.esperanto.org.nz/jsp/jspfaq.html
> http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
> http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
--------------49C143CEF6F9D05D5A669F05
Content-Type: text/x-vcard; charset=us-ascii;
name="ravi.nallakukalla.vcf"
Content-Transfer-Encoding: 7bit
Content-Description: Card for Ravi
Content-Disposition: attachment;
filename="ravi.nallakukalla.vcf"
begin:vcard
n:N;Ravi
tel;home:+91 8572 27808
tel;work:+ 91 80 5538301 2610
x-mozilla-html:FALSE
adr:;;;;;;
version:2.1
email;internet:[EMAIL PROTECTED] [EMAIL PROTECTED]
fn:Ravi N
end:vcard
--------------49C143CEF6F9D05D5A669F05--
===========================================================================
To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST".
For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST DIGEST".
Some relevant FAQs on JSP/Servlets can be found at:
http://java.sun.com/products/jsp/faq.html
http://www.esperanto.org.nz/jsp/jspfaq.html
http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
