a page is an implicit object in JSP as the type Object class. This object is allocated to the citation of the auto-created servlet class.
For making use of this object it should be cast to Servlet type.
<% (HttpServlet)page.log("message"); %>
Considering it is one of the types of Objects it is less used as you can make use of this object straightly in jsp.
<% this.log("message"); %>