import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.Date;
public class SessionTest6 extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws IOException, ServletException{
response.setContentType("text/html; charset=Shift_JIS");
PrintWriter out = response.getWriter();
HttpSession session = request.getSession(false);
out.println("");
out.println("");
out.println("セッションテスト");
out.println("");
out.println("");
if (session == null){
out.println("セッションを開始します
");
session = request.getSession(true);
}
int intervalTime = session.getMaxInactiveInterval();
out.println("");
out.println("現在のデフォルトの有効期限は" + intervalTime + "秒です
");
out.println("
");
out.println("有効期限を20秒へ");
out.println("");
out.println("");
}
}