I have to do an assignment with JSP and I keep getting this error org.apache.jasper.JasperException: An exception occurred processing JSP every time I try to run the page.

here is my JSP code that the error is in

//Receiving Information from
String renters_name = request.getParameter("name");
int days_rented = Integer.parseInt(request.getParameter("days"));
String car_size = request.getParameter("carsize");
double newrental = 0.0;

If anyone can help me that would be great.