Unable to connect database by DataSource in tomcat5.5 plz help to me

hi,
i want to connect Database through DataSource in Tomcat5.5 with mysql
i wrote one servlet , made change in server.xml, web.xml.
when i access it show exception
java.security.AccessControlException: access denied (java.lang.RuntimePermission accessClassInPackage.org.apache.tomcat.dbcp.collections)
        at java.security.AccessControlContext.checkPermission(AccessControlContext.java:264)
        at java.security.AccessController.checkPermission(AccessController.java:427)
        at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
        at java.lang.SecurityManager.checkPackageAccess(SecurityManager.java:1512)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:265)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)The servlet
* DataSourceAccess.java
* Created on August 22, 2005, 3:14 PM
package officecom;
import java.io.*;
import java.net.*;
import java.sql.*;
import javax.naming.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.sql.*;
* @author Paramasivam
* @version
public class DataSourceAccess extends HttpServlet {
    /** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        /* TODO output your page here
        out.println("<html>");
        out.println("<head>");
        out.println("<title>Servlet DataSourceAccess</title>");
        out.println("</head>");
        out.println("<body>");
        out.println("<h1>Servlet DataSourceAccess at " + request.getContextPath () + "</h1>");
        out.println("</body>");
        out.println("</html>");
        out.println(" got connection ? "+getDataConnnecion());
        out.close();
    public boolean getDataConnnecion(){
        try{
            System.out.println(" INFO : getConnection called     ");
            Context initContext = new InitialContext();
            Context envContext = (Context)initContext.lookup("java:/comp/env");
            DataSource ds = (DataSource)envContext.lookup("mysql");
            Connection con = ds.getConnection();
            if( con != null ){
                return true;
            }else
                return false;
        }catch(Exception e){
            e.printStackTrace();
            return false;
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    /** Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    /** Returns a short description of the servlet.
    public String getServletInfo() {
        return "Short description";
    // </editor-fold>
}Changes in server.xml
<GlobalNamingResources>
      <Resource
      name="mysql"
      auth="Container"
      type="javax.sql.DataSource"
      password=""
      driverClassName="com.mysql.jdbc.Driver"
      maxIdle="2"
      maxWait="5000"
      username="root"
      url="jdbc:mysql://localhost:3306/sushi?autoReconnect=true"
      maxActive="4"/>
</GlobalNamingResources>changes in web.xml
<resource-ref>
           <description>Tomcat DBCP</description>
           <res-ref-name>mysql</res-ref-name>
           <res-type>javax.sql.DataSource</res-type>
           <res-auth>Container</res-auth>
</resource-ref>

You might have more answers if you post this same question in the Sun Java Studio Enterprise forum...
http://swforum.sun.com/jive/category.jspa?categoryID=90

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