protected void doGet(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException {

    String name=req.getParameter("name");
    String email=req.getParameter("email");
    int marks=Integer.parseInt(req.getParameter("marks"));

    Student st=new Student(0,name,email,marks);

    System.out.println("Inside get method before configuration object generation");
    Configuration cfg=new Configuration();
    System.out.println("After configuration initialization");
    cfg.configure("Resourses/hibernate.cfg.xml");
    System.out.println("after giving hibernate config file");
    sf=cfg.buildSessionFactory();

}

Sep 25, 2016 8:56:41 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [Controller.StudentRegistrationServlet] in context with path [/StudentRegistration] threw exception
java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "createClassLoader")
    at java.security.AccessControlContext.checkPermission(AccessControlContext.java:457)
    at java.security.AccessController.checkPermission(AccessController.java:884)
    at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)