This might help you: http://www.coderanch.com/t/443561/Servlets/java/sendRedirect-working.
public void editQuery() throws IOException {
String url = request.getContextPath() + "/search.jsp";
url = response.encodeRedirectURL(url);
//url = response.encodeURL(url);
response.setHeader("Pragma", "No-cache");
response.setHeader("Cache-Control", "no-cache");
response.setHeader("Expires", "1");
response.sendRedirect(url);
}
Please note that IE6 is no longer maintained. Microsoft publishes no security fixes which makes this a very unsafe browser.