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@WebServlet("/patient")
public class PatientServlet extends HttpServlet {
private static final long serialVersionUID=1L;

    @override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
        this.getServletContext().getRequestDispatcher("/WEB-INF/patient.jsp").forward(request,response);
     }
  }

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
 <html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>JSP Page</title>
</head>
<body>
    Sign In:
    <form method="POST" action="j_security_check">
        Username:<br>
        <input type="text" name="j_username" size="20">
        Password:<br>
        <input type="password" name="j_password" size="20">
        <br>
        <input type="submit" value="Sign In">
    </form>
</body>

<%@ page session="true"%>

User '<%=request.getRemoteUser()%>' has been logged out.
<% session.invalidate(); %>

<br/><br/>
<a href="test">Go to Log In form </a>

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
 <%@taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql"%>

  <%@page contentType="text/html" pageEncoding="UTF-8"%>
  <!DOCTYPE html>
  <html>
     <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
     </head>
     <body>
       <h1>Hello!</h1>
       <a href="logout.jsp">Click here to log out </a>
      </body>
   </html>