Passing Parameter from a Servlet to other Servlets

Hi Experts I have 2  servlets :
LongOn.class
Form1.class
First one is for login in (user name and pwd), once is logged in  It should call  to other servlet that shows a simple form, well I want to pass the user name gotten  from the first servlet to the second servlet, cause  I have to save the   user name   in a database table (its part of the information of the form)

1.How can I set the parameter username in the first Servlet
2.How can I get the parameters username in the second Servlet
3. I use the following syntax in the Post Method to call the second servlet from the first servlet
ServletContext sc =getServletContext();
RequestDispatcher rd=sc.getRequestDispatcher("Form1.class");
                  try
                  {
                  rd.forward(req,res);      
                  }      
       
                  catch(IOException e)
                  {
                  System.out.println (e.getMessage());      
                  }      


but it shows an error message " java.lang.IllegalArgumentException  '/'  missing" , well so I put that character and then it showed other error message " /Form1.class resource is not available "
Well both servlets are located in the same directory (C:\jakarta-tomcat-5.0.28\webapps\ROOT\WEB-INF\classes)

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