cookiedemo.java

simple program can be used to understand creating sesion and cookies in java servlet.

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class cookiedemo extends HttpServlet
{
public void doGet(HttpServletRequest req,HttpServletResponse res)
throws IOException,ServletException
{
res.setContentType("text/html");
PrintWriter out=res.getWriter();
Cookie[] cookie=req.getCookies();
if(cookie.length>0)
{
for(int i=0;i<cookie.length;i++)
{
String cname=cookie[i].getName();
String cvalue=cookie[i].getValue();
out.println("Cookie Name "+cname);
out.println("Cookie Value "+cvalue);
}
}
String cname=req.getParameter("cname");
String cvalue=req.getParameter("cvalue");
Cookie c=new Cookie(cname,cvalue);
res.addCookie(c);
}
}