CODEWITHSUNDEEP
javajsp
Akki53iky0
Akki53iky0

Reputation: 23

cannot convert data to upper case using `request.getParameter`

<%String dest = request.getParameter("destination").toUpperCase();%>

Hello...

I got a little bit problem here. I am using the above code to get value from form. When use the code without toUpperCase(), it was a success. But, when I add toUpperCase() I got HTTP Status 500 - An exception occured processing JSP page.

Upvotes: 1

Views: 1377

Answers (2)

Abdelhak
Abdelhak

Reputation: 8387

When you get value null from request.getParameter("destination"), apply toUpperCase() to a null value gives an error.
Try to do like this:

 <%String dest = request.getParameter("destination");
   if(dest!=null){
      dest = dest.toUpperCase();
    }
   %>

The request.getParameter() returns String value or a null value from client.

Upvotes: 1

creanium
creanium

Reputation: 647

More than likely, request.getParameter("destination") is returning null in your code, which would be why it's throwing an error. If the parameter is not found, then null is returned, otherwise a String is returned.

So you'll want to verify that it's not null

<% String dest = request.getParameter("destination");

if(dest != null) {
    dest = dest.toUpperCase();
}
%>

Upvotes: 0

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