Java bean servlet

Question

is it possible to access a bean in servlet ?
if yes ...
please solve my problem
i am trying to access a form data from html page..
simple form
<form method="post" action="Beanservlet" >
<input type="text"  name=username >
</form>BeanServlet.java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import use.UserData;
public class BeanServlet extends HttpServlet
     protected void doGet (HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException
          response.setContentType("text/html");
          PrintWriter out = response.getWriter();
          UserData ud = new UserData();
          String st =ud.getUsername();
          out.println(st);
     protected void doPost (HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException
          doGet(request,response);
}Bean Class
package use;
public class UserData {
    private String username;
public void setUsername( String value )
        username = value;
public String getUsername() { return username; }
}in my beanservlet page i got null instead of printing the value i accessed from html ..
null

Answer 1

UserData ud = new UserData();
String st =ud.getUsername();
out.println(st);
do u know what u were doing on the above code? u're trying to create an instance of UserData without setting any value into its properties, and then you get the username from this empty instance, surely you will get null for the name...
in order to retrieve data from a jsp page, u'll need to ensure that u're using a form, and the data u intended to retrieve is specified inside this form. and then, in your servlet class, doGet method, use HttpServletRequest.getParameter(String name), where the name is the name you specified in the input tag. once u've done that, it should display the name correctly....
hope this help.