Please help me very very urgent i am unable to do it from last two months

Question

i am getting 404 error
the requested resource is not available
http://ustca130/Loginportal
// my web.xml ///
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
<display-name>Name for Loginportal</display-name>
<description>
     This is a simple web application with a source code organization
     based on the recommendations of the Application Developer's Guide.
</description>
<servlet>
<servlet-name>Loginportal</servlet-name>
<servlet-class>com.hp.ifc.install.verify.Loginportal</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Loginportal</servlet-name>
<url-pattern>Loginportal</url-pattern>
</servlet-mapping>
</web-app>
//Loginportal//
package com.hp.ifc.install.verify;
import javax.servlet.http.HttpServlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.RequestDispatcher;
import com.hp.ifc.install.database.Loginportalbean;
* Servlet Class
* @web.servlet name="Loginportal"
* display-name="Name for Loginportal"
* description="Description for Loginportal"
* @web.servlet-mapping url-pattern="/Loginportal"
* @web.servlet-init-param name="A parameter"
* value="A value"
public class Loginportal extends HttpServlet {
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException,IOException
          // TODO Auto-generated method stub
          RequestDispatcher rd;
          String username=req.getParameter("J_USERNAME");
          String password=req.getParameter("J_PASSWORD");
          Loginportalbean lb = new Loginportalbean();
          if(lb.isUservalid(username,password))
               rd=req.getRequestDispatcher("success.html");
          else
               rd=req.getRequestDispatcher("fail.html");
}

Answer 1

Shouldn't that URL include the name of your web application? Sort of like this:
http://ustca130/AppName/Loginportal