Title: RE:
Check whether the name is
null.
after
String name = selected [i];
System.out.println("Name : " + name);
Harry
-----
following servlet gives a errornull message.
Please help me to overcome.
Regards
Nilantha
import
javax.servlet.*;
import javax.servlet.http.*;
import
java.io.*;
import java.util.*;
public class cartExample extends
HttpServlet{
HttpSession session =
null;
public void doPost
(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException{
try
{response.setContentType("text/html");
PrintWriter out = new PrintWriter
(response.getOutputStream());
out.println("<html>");
out.println("<head><title>Servlet</title></head>");
out.println("<body>");
out.println ("Here are the ordered
Items");
session =
request.getSession(true);
Integer itemcount = (Integer)
session.getValue("itemcount");
if (itemcount ==
null){
itemcount = new Integer(0);
}
String [] selected =
request.getParameterValues("item");
System.out.println
(selected.length);
if
(selected !=
null){
for (int i= 0; i<selected.length;
i++){
if
(selected[i]!=null){
String name = selected
[i];
System.out.println ("not
null");
itemcount = new Integer
(itemcount.intValue()+1);
session.putValue(Integer.toString(i).trim(),new
String(name));
}
}
session.putValue("item count",
itemcount);
}
System.out.println
(itemcount.intValue());
out.println("The products
are");
for (int i=0; i
<itemcount.intValue();
i++){
if
(session.getValue(Integer.toString(i).trim())!=null){
String item = (String)
session.getValue(Integer.toString(i).trim());
out.print ("<p>" +
item);
}
}
out.println
("</body></html>");
out.close();
}
catch(Exception
e){
System.out.println
("error" + e.getMessage());
}
}
public void destroy
(){
session =
null;
}
}
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