How to access application vars into JavaBeans or Java File?

I have the application directory strcuture like this. I am using Apache Tomcat/6.0.14 and Eclipse IDE.
-/MyFirstServlet
-/MyFirstServlet/WebContent
-/MyFirstServlet/WebContent/WEB-INF/web.xml
-/MyFirstServlet/WebContent/web.jsp
-/MyFirstServlet/Src
     - com.model.DAO/userDAO.java (java class within package)
I have put following code into "web.xml".
==================================
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" 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">
     <display-name>
     MyFirstServlet
     </display-name>
     <context-param>
          <param-name>DBDriver</param-name>
          <param-value>com.microsoft.sqlserver.jdbc.SQLServerDriver</param-value>
     </context-param>
     <context-param>
          <param-name>connectionUrl</param-name>
<param-value>jdbc:sqlserver://localhost:1433;databaseName=MyFirstServletDB;user=hitesh;password=hit
esh;</param-value>
     </context-param>
     <welcome-file-list>
          <welcome-file>index.html</welcome-file>
          <welcome-file>index.htm</welcome-file>
          <welcome-file>index.jsp</welcome-file>
          <welcome-file>default.jsp</welcome-file>
     </welcome-file-list>
</web-app>
I am easily able to access from "web.jsp"
===================================
String DBDriver = application.getInitParameter("DBDriver");
out.println("<br>DBDriver:==="+DBDriver);
String connectionUrl = application.getInitParameter("connectionUrl");
out.println("<br>connectionUrl:==="+connectionUrl);
BUT when I try to access withing userDAO.java it gives "application is not resolved"
========================================================================
String DBDriver = (String)application.getInitParameter("DBDriver");
NOTE: I understand I need to import some inbuilt java package which will allow to use applcation vars
within java class.
What is that package? and how to do that?
Is there any other easy method to use global/application vars which can be used in all
JSP/JavaBeans/Java files?
Thanks in advance.

It might be easier to put that code somewhere else. JSP's are for presentation, not for accessing databases, business logic, etc.

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How to access application vars into JavaBeans or Java File?

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