Null pointer exception

Hi Guys i was developing a action servlet which is actulally getting the data from a form and putting it in the db but while executing i am getting a null pointer exception

/*
* Generated by MyEclipse Struts
* Template path: templates/java/JavaClass.vtl
*/
package com.radesan.struts.action;

import java.sql.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import com.radesan.struts.form.NewAdminForm;

/**
* MyEclipse Struts
* Creation date: 03-09-2008
*
* XDoclet definition:
* @struts.action path="/newAdmin" name="newAdminForm" input="/newadmin.jsp" scope="request"
* @struts.action-forward name="success" path="/admin.jsp"
*/
public class NewAdminAction extends Action {
/*
* Generated Methods
*/
int j;
/**
* Method execute
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
NewAdminForm newAdminForm = (NewAdminForm) form;// TODO Auto-generated method stub
int staffnumber=0;
try {
Connection cn=null;
Statement s=null;
ResultSet rs=null;
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
cn=DriverManager.getConnection("jdbc:odbc:radesan" );
s=cn.createStatement();
rs=s.executeQuery("select max(staffnumber) from newadmin");
if(rs.next()) {
staffnumber=rs.getInt(1);
}
rs.close();
s.close();
cn.close();
}catch(Exception e) {e.printStackTrace();}

String bloodgroup;
String dateofjoining;
try {
Connection cnn=null;
Statement cs=null;
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
cnn=DriverManager.getConnection("jdbc:odbc:radesan ");
String sno = Integer.toString(++staffnumber);

bloodgroup=newAdminForm.getB1()+newAdminForm.getB2 ();
dateofjoining=newAdminForm.getDd()+"/"+newAdminForm.getMm()+"/"+newAdminForm.getYy();
String insert="insert into newadmin values ('"+sno+"','"+newAdminForm.getFirstname()+"','"+ne wAdminForm.getLastname()+"','"+newAdminForm.getPas sword()+"','"+newAdminForm.getAuthorisation()+"',' "+newAdminForm.getStreet()+"','"+newAdminForm.getS tate()+"','"+newAdminForm.getPincode()+"','"+newAd minForm.getSex()+"','"+bloodgroup+"','"+newAdminFo rm.getAge()+"','"+newAdminForm.getLandline()+"','" +newAdminForm.getMobile()+"','"+dateofjoining+"',' "+newAdminForm.getSTATUS()+"')";
j=cs.executeUpdate(insert);
cs.close();
cnn.close();


}catch(Exception e){e.printStackTrace();}
return mapping.findForward("success");
}
}

re: Null pointer exception

Don't make us guess; the JVM does not simply say "null pointer exception,
bad luck", it also gives you the line number and the text of the line where that
exception was thrown; on top of that it gives you the entire stack trace.

I don't think it is too much to ask if you reproduce all that information for us here
if you want us to solve your problem.

kind regards,

Jos

re: Null pointer exception

And i agree........

sukatoa

re: Null pointer exception

Please use code tags when posting code.

It looks like the Statement object is never initialized. So the executeUpdate() method is being called on a a null object.

re: Null pointer exception

can you print the code again using the CODE tags it will be much simpler to read.

good luck

hsn

re: Null pointer exception

That's one wide line ;-)