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Exception org.apache.jasper.JasperException: java.lang.NullPointerException

549171Aug 2 2009 — edited Aug 3 2009
Hello, i'm testing an example related to accessing a database from JSP.
I found the example in the following url and i followed all the steps it says.
The example is located here [http://www.roseindia.net/jsp/Accessingdatabase-fromJSP.shtml] .
The example with book_details.

When i insert data in the fields i get :
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.NullPointerException
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)

root cause

java.lang.NullPointerException
	org.apache.jsp.BookEntryForm_jsp._jspService(BookEntryForm_jsp.java:133)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.
May sm tell me what shall i do in order to run the example?
Thanks, in advance!
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Locked on Aug 31 2009
Added on Aug 2 2009
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