index.html
<html>
<head>
<title>Session Demo</title>
</head>
<form action="Page1" method="get" >
Enter UserName <input type="text" name="txtName"><br><br>
<input type="reset" value="Reset" >
<input type="submit" value="Submit">
</form>
</html>
Page1.java
package mypack;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class Page1 extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
out.println("<html><head><title>Session Demo</title></head>");
String name = request.getParameter("txtName");
HttpSession hs = request.getSession(true);
if(hs.isNew())
{
out.println("<body bgcolor=yellow>");
hs.setAttribute("visit", "1");
out.println("<h1>Welcome First Time</h1>");
}
else
{
out.println("<h1>Welcome Again</h1>");
}
out.println("<body bgcolor=yellow>");
out.println("<h1> UserName : "+name+"</h1>");
int visit = Integer.parseInt((String)hs.getAttribute("visit"))+1;
out.println("<h1>You Visited "+visit+"Times</h1>");
hs.setAttribute("visit", ""+visit);
out.println("<h1>Your Session ID "+hs.getId()+"</h1>");
out.println("<h1>You Logged in at "+new java.util.Date(hs.getCreationTime())+"</h1>"); out.println("<h1><a href=LogoutServlet>Click to Terminate Session </a></h1>");
}
}
LogoutServlet.java
package mypack;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class LogoutServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
out.println("<html><head><title>Servlet LogoutServlet</title></head>");
out.println("<body bgcolor=red>");
javax.servlet.http.HttpSession hs = request.getSession();
if(hs != null)
hs.invalidate();
out.println("</body>");
out.println("<h1>You are Logged out now........</h1>");
out.println("</html>");
}
}
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