How can I pass a variable value from first jsp page to thired jsp page

In my program ,threr are three jsp pages . I want the first pages's variable value in to thired page .How can I acess.
I used the request.getparameter() ,but when I print the value , null value is getting .

request parameters only last for one request.
To save them longer than that you need to save them somewhere.
Couple of alternatives
1 - store them to session
session.setAttribute("username", request.getParameter("username");
2 - create a hidden field on page 2 and store the value from page 1 there. When you submit page2, you can get it on page3 with request.getParameter again.
<input type="hidden" name="username" value="<%= request.getParameter("username") %>">

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How can I pass a variable value from first jsp page to thired jsp page

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