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Null Pointer Exception error

Viral Patel
Greenhorn

Joined: Aug 12, 2008
Posts: 8
Hi...

I am getting error of java.lang.NullPointerException.

Previously I used Tomcat 4.0 and my code is working fone...

but when I upgraded my tomcat 4.0 to tomcat 6.0 it gives me the error of java.lang.NullPointerException.

Please help me ....
it gives error of NullPointerException on line
int id = Integer.parseInt(cachedRS.getString("SerialNo"));

here is the code...

Ananth Chellathurai
Ranch Hand

Joined: Nov 21, 2007
Posts: 349

Hi Viral,

I think you have posted this topic in two places.

Regards,
Ananth Chellathurai


Ananth Chellathurai [Walk on software]
Jeanne Boyarsky
author & internet detective
Marshal

Joined: May 26, 2003
Posts: 30752
    
156

Viral,
What code creates the result set and puts it in the session? Is it getting executed in Tomcat 6?


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Viral Patel
Greenhorn

Joined: Aug 12, 2008
Posts: 8
i am using file connLoad.jsp for connection and init resultset
its works fine in other files as well as if I run the same code using tomcat4 then it works but in tomcat 6 its not working....

here is the code of connLoad.jsp




please reply as im stucked and waiting for solution

thanks in advvance
Jeanne Boyarsky
author & internet detective
Marshal

Joined: May 26, 2003
Posts: 30752
    
156

Viral,
First, note that it is considered bad practice to put Java code - especially database code - in a JSP. It should be in Java objects.

Have you looked at the logs or what line the NullPointer is thrown on yet?

The following code jumps out at me as a problem. If there is an exception loading the connection, a message is logged and the code continues with the connection set to null. This invites the code to blow up later when someone tries creating a statement from that connection.
 
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subject: Null Pointer Exception error