<form action="FirstServlet.java">
      Name:<input type="text" name="uname"/><br/>
</form>

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class MyServlet1 extends HttpServlet {
    public void doGet(HttpServletRequest request, HttpServletResponse response){
        try{
            response.setContentType("text/html");
            PrintWriter out = response.getWriter();
            String name = request.getParameter("uname");
  
            out.print("Hello "+name);

            Cookie ck=new Cookie("uname",s1);
            response.addCookie(ck);
  
            out.print("< form action='SecondServlet' >");
            out.print("<input type='submit' value='ok'>");
            out.print("<form >");
            out.close();
        }catch(Exception exp){
            System.out.println(exp);
        }
    }
}

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class MyServlet2 extends HttpServlet {
    public void doGet(HttpServletRequest request, HttpServletResponse response)
    {
        try{
            response.setContentType("text/html");
            PrintWriter out = response.getWriter();
            Cookie[] c=request.getCookies();

            out.print("Hiii"+" "+c[0].getValue());
      
      
        }catch(Exception exp){
            System.out.println(exp);
        }
    }
}