I encountered this when i execute checkLogin.jsp.  Please help.



Something bad has happened. And it looks like: 
Exception java.lang.NullPointerException 

Message null 


-------------------------------------------------


2001-06-05 05:10:37 - PoolTcpConnector: Starting Ajp12ConnectionHandler on 
8007
java.io.PrintWriter@5...
java.lang.NullPointerException
        at 
wrox.ch_00030_00035._0002fwrox_0002fch_00030_00035_0002fcheckLogin_00
02ejspcheckLogin_jsp_8._jspService
(_0002fwrox_0002fch_00030_00035_0002fcheckLogi
n_0002ejspcheckLogin_jsp_8.java:130)
        at org.apache.jasper.runtime.HttpJspBase.service
(HttpJspBase.java:119)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service
(JspSer
vlet.java:177)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:3
18)
        at org.apache.jasper.servlet.JspServlet.service
(JspServlet.java:391)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at org.apache.tomcat.core.ServletWrapper.doService
(ServletWrapper.java:4
04)
        at org.apache.tomcat.core.Handler.service(Handler.java:286)
        at org.apache.tomcat.core.ServletWrapper.service
(ServletWrapper.java:372
)
        at org.apache.tomcat.core.ContextManager.internalService
(ContextManager.
java:797)
        at org.apache.tomcat.core.ContextManager.service
(ContextManager.java:743
)
        at 
org.apache.tomcat.service.http.HttpConnectionHandler.processConnectio
n(HttpConnectionHandler.java:210)
        at org.apache.tomcat.service.TcpWorkerThread.runIt
(PoolTcpEndpoint.java:
416)
        at org.apache.tomcat.util.ThreadPool$ControlRunnable.run
(ThreadPool.java
:498)
        at java.lang.Thread.run(Thread.java:484)