Servlet to Bean to JSP

Question

I have a JSP that sends two form values to a servlet. I want to send those parameters to a bean for calculation and then send the results back to the JSP. I am stuck on the Servlet code and don't know how to send it back with the bean don't know how to start the bean:
import javax.servlet.*;
int rate, hours;
public class calculateParamServlet extends HttpServlet{
     public void doPost(HttpServletRequest req, HttpServletResponse res) throws
     ServletException, IOException {
          rate = req.getParameter("hourlyRate");
          hours = req.getParameter("hours");
}Any help would be appreciated,
Kent

Answer 1

A bean is just a Java class so the same rules apply.
e.g in the doPost method,
myBean mybean = new MyBean();
mybean.setRate(rate);
mybean.setHours(hours);
out.println(mybean.getCalc());
If you want to save the reference to the bean, save it in the application or session scope and check for its existence before creating it again. You could also do all this directly from the JSP.
HTH