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Getting error

 
Ranch Hand
Posts: 48
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Hi,


I tried to get selected value into my Servlet page but I did n't able to get the selected value.Am getting exception.Please give me
solution to solve this problem.First i run my operator.jsp .This page contains two frames.In left side am getting values from database
through radio button.In right side of the page contains text box and submit button.If i select any radio button value and give input into
text box when submit the transfer or hold button clicked the corresponding action will be performed into my Servlet page.But i should n't able to run successfully.Am getting the Null pointer Exception.

This is my JSP code operator.jsp



refresh1.jsp




The final one is Servlet code...
MainServlet.java


The following error message will be getting...
java.lang.NullPointerException
MainServlet.doGet(MainServlet.java:35)
javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

Regards,
Suganya.
 
Rancher
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In which line does the exception occur? Which object is null?
 
R Sugan
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Hi,

I should not able to get the selected radio button value in my servlet page and am getting the values from Jsp page using this function.

String callerid=request.getParameter("callerid");
out.print(callerid);


Regards,
Suganya
 
Ulf Dittmer
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I'm not following. Both JSPs have a form field "callerid", so I would expect to be able to get a value. Why do you think otherwise?

I'm also still not clear on which line throws the exception, and which object is null - the "callerid" parameter? If you don't expect a value to be transmitted then that should not be a surprise.
 
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Eclipse IDE Windows XP Java
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Hi,


in your first jsp , you have hidden field right?



i guess your callerid value is not set in javascript properly.
 
R Sugan
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Hi,

I change that field <input type="hidden" name="idtemp" id="idtemp"/> now i get null values...Please help me..
How to solve this problem...


Regards,
Suganya
 
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