Sally Mohamed AbdelRahman

In the server properties, on the "configuration" tab, have you checked the box next to "Enable administration console"?

Maybe this link could help you out International Calendars in Java.
Good luck.

JSPs are not thread safe unless you make them. For you to ensure that the page is thread-safe, you need to use the directive:
<%@ page isThreadSafe="false" %>
this says that you as the developer have not checked that the jsp is thread-safe, and specifies that the jsp engine will ensure that your jsp's generated servlet will handle each request on its own without overwriting of parameter values.