<TD><A href="PersonDetails" target="_blank">Изменить</A></TD>

 public   class  PersonDetails  extends  HttpServlet {
	 protected   void  doGet(HttpServletRequest req, HttpServletResponse resp)  throws  ServletException, IOException {
           ...
           RequestDispatcher rd = getServletContext().getRequestDispatcher("/personDetails.jsp");
   	    rd.forward(req, resp);
	}

	 protected   void  doPost(HttpServletRequest req, HttpServletResponse resp)	 throws  ServletException, IOException {
                      ...
		// see what button the user pressed
		 if  (req.getParameter("submit").equals("Изменить")) {
                          ...
		}   
		//Обновляем страницу
    	           resp.sendRedirect("DataPage");
	}
}

...
<FORM name="PersonDetailsForm" target="_parent" method="post" action="PersonDetails">
<TABLE border="0" cellpadding="0" cellspacing="0">
 <TR>
...
 <TR>
  <TD colspan="3">
   <INPUT type="submit" name="submit" value="Изменить"/> 
  </TD>
 </TR>
</TABLE>
</FORM>
...

resp.sendRedirect("DataPage");

resp.sendRedirect("JavaScript: window.document.close; bla-bla-bla;");

resp.getWriter().print("<script>window.opener.window.location.reload();window.close();</script>");

<TD><A href="window.showModalDialog('url', '','center=yes; status=off; scroll=off; help=off;')" target="_blank">Изменить</A></TD>