response.sendRedirect Parameter Passing Guide

When using the response.sendRedirect() method for page redirection, it is not possible to directly pass parameters. This is because redirection is accomplished through the Location header field in the HTTP protocol, which can only pass a URL address and not parameters.

One way to pass parameters is to use the query string in the URL. For example:

String param1 = "value1";
String param2 = "value2";
response.sendRedirect("targetPage.jsp?param1=" + param1 + "&param2=" + param2);

In the target page (targetPage.jsp), the parameter value can be obtained through the request.getParameter() method. For example:

String param1 = request.getParameter("param1");
String param2 = request.getParameter("param2");