jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
servlet
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html;charset=UTF-8");
String str = new String(request.getParameter("t").getBytes("ISO-8859-1"),"utf-8");
PrintWriter out = response.getWriter();
out.println("The First Servlet Worked!...."+str+"....");